7
g) Calculate|
（
a1-a2
）
- (b1-b2) |= e
，
If e is above 1mm, the instrument accuracy is out of tolerance, please contact the
seller for servicing.
5.3 Self-calibration & adjustment
As shown in the following picture, the instrument have two calibration apertures, A means the left and right adjustment
transversely (the error tested by item1), B means the front and back adjustment longitudinal (the error tested by item2).
(1) Adjust with 3mm hexagon spanner.
(2) (2)The adjustment of two directions will influence each other sometimes. When making the fine adjusting in left and
right direction transversely, the front and back direction longitudinal will change possibly, also, when adjusting in front
and back longitudinal, the left and right direction transversely will change possibly.
(3) The adjustment of self-calibration screw could not exceed 4 circles. (Clockwise or anti-clockwise direction).
(4) If the instrument could not adjust through self-calibration aperture, please contact the distributor for servicing.
6. Demonstration
自校孔
B
自校孔
A
