FUTEK IPM600 (D610) Digital Display - Manual (Page 35)

4.CALIBRATION
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4-7. Increment (This step may be omitted if there is no change.)
Set the increment of the indicated value.
Input range: 001 - 100
How to set
1 Press the MODE button.
2 Press the CALIBRATION button.
3 Press the INCREMENT button.
4 Enter the increment by the numerical keys and determine with the OK button.
Setting call Page 1 Calibration