4
auto repair industry for tiring assembling angle accurate
controlling; in ma- chining industry for machine tool working
angle accurate positioning; in woodwork; when setting
guides for gypsum board partitions.
5.Calibration
1)Press and hold ZERO button to turn on the calibration
mode. Then press and hold ON/OFF button. Calibration mode
is activated and “CAL 1” is displayed. Place the instrument on
a flat and smooth surface as shown in the picture.
2) Press ZERO button once in 10 seconds. “CAL 2” wil be
displayed. Rotate the instru- ment by 90 degrees in clockwise
direction. Place it on the right edge towards display.
3) Press ZERO button once in 10 seconds. “CAL 3” wil be
displayed. Rotate the instrument by 90 degrees in clockwise
direction. Place it on the upper edge towards display.
4) Press ZERO button once in 10 seconds. “CAL 4” wil be
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