TOOLCRAFT LDM 30 P Mode D'emploi page 37

4. After each measurement, the laser is deactivated and must be
reactivated before taking another measurement.
11. Adding / subtracting measurements
1. Measure the first value.
2. Push the button +/- (D). The value you just measured is moved to
the first line on the display.
Push the button +/- once to add the next value.
Push the button +/- twice to subtract the next value.
3. Activate the target laser (B) by pushing the button ON (C).
4. Measure the second value by pushing the button ON. The second
value is shown in the second line on the display. The sum or
difference of both measurements is shown in the lower line.
5. Follow the steps described above to add or subtract further
measurements.
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