Adjustment of the horizontal protractor platform
1. Mount the digital protractor on the frame and reset its value.
2. Place the digital protractor on the ground for the protractor. If the deviation is more than
0,3 °, slightly loosen the adjusting screw with an 2mm hex key. While holding with the hand
from the bottom, adjust inclination by the digital protractor, then tighten the upper adjust-
ment screw.
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