Rice Lake DWM-IV Digital Weighmeter Model 5 - Manual (Page 15)

F5.3 ENTER CALIBRATION MODE
d Continue to the last step (CAL d.)
E Enter the CAL mode to calibrate scale.
F5.4 LINEARITY FACTOR
Enter the linearity factor, if required.
Options: 0, 1, 2, 3, 4, 5, 6, 7, -0, -1, -2, -3, -4, -5 ,6, -7
Note: The value selected is determined empirically in the field. If with a zero factor,
the scale base reads heavy at half capacity, then use positive values for the Linearity
Factor. If the scale reads light, then use negative values.