A single setting to validate filament width

Marlin/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/default/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Anet/A6/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Anet/A8/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Azteeg/X5GT/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/BQ/Hephestos/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/BQ/Hephestos_2/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         2.00 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.60 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        0.25 // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/BQ/WITBOX/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Cartesio/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Creality/CR-10/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT        (DEFAULT_NOMINAL_FILAMENT_DIA+4*DEFAULT_STDDEV_FILAMENT_DIA) // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT        (DEFAULT_NOMINAL_FILAMENT_DIA-4*DEFAULT_STDDEV_FILAMENT_DIA) // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN (DEFAULT_STDDEV_FILAMENT_DIA*4)  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Felix/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Infitary/i3-M508/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/MakerParts/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Malyan/M150/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Malyan/M200/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Mks/Sbase/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/RigidBot/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/SCARA/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Sanguinololu/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/TinyBoy2/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/UltiMachine/Archim2/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Velleman/K8200/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Velleman/K8400/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         1.95 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.20 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        0.5  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/generic/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/kossel_mini/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/kossel_pro/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/delta/kossel_xl/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/makibox/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/stm32f103ret6/Configuration.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor (0,1,2,3)
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/tvrrug/Round2/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/config/examples/wt150/Configuration_adv.h

   #define FILAMENT_SENSOR_EXTRUDER_NUM 0    // Index of the extruder that has the filament sensor. :[0,1,2,3,4]
   #define MEASUREMENT_DELAY_CM        14    // (cm) The distance from the filament sensor to the melting chamber
 
-  #define MEASURED_UPPER_LIMIT         3.30 // (mm) Upper limit used to validate sensor reading
-  #define MEASURED_LOWER_LIMIT         1.90 // (mm) Lower limit used to validate sensor reading
+  #define FILWIDTH_ERROR_MARGIN        1.0  // (mm) If a measurement differs too much from nominal width ignore it
   #define MAX_MEASUREMENT_DELAY       20    // (bytes) Buffer size for stored measurements (1 byte per cm). Must be larger than MEASUREMENT_DELAY_CM.
 
   #define DEFAULT_MEASURED_FILAMENT_DIA DEFAULT_NOMINAL_FILAMENT_DIA // Set measured to nominal initially

Marlin/src/inc/SanityCheck.h

   #error "PROBE_DOUBLE_TOUCH is now MULTIPLE_PROBING. Please update your configuration."
 #elif defined(ANET_KEYPAD_LCD)
   #error "ANET_KEYPAD_LCD is now ZONESTAR_LCD. Please update your configuration."
+#elif defined(MEASURED_LOWER_LIMIT) || defined(MEASURED_UPPER_LIMIT)
+  #error "MEASURED_(UPPER|LOWER)_LIMIT is now FILWIDTH_ERROR_MARGIN. Please update your configuration."
 #endif
 
 /**

Marlin/src/module/temperature.cpp

    * a return value of 1.
    */
   int8_t Temperature::widthFil_to_size_ratio() {
-    if (WITHIN(filament_width_meas, MEASURED_LOWER_LIMIT, MEASURED_UPPER_LIMIT))
+    if (FABS(filament_width_nominal - filament_width_meas) <= FILWIDTH_ERROR_MARGIN)
       return int(100.0 * filament_width_nominal / filament_width_meas) - 100;
     return 0;
   }