AccuLine 40-6910 22x Service Manual - Page 6
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40-6910 Service Manual
2.0 Calibration
Calibration is a process that is used to correct for accuracy and/or functional errors above and beyond those stated in published
specifications. This product is fairly easy to verify and calibrate as there are only two adjustments that can be made. Each item
discussed is shown below.
2.1Vial Verification/Calibration
C
Mount the instrument on the tripod. Turn the telescope to
C
the position as shown in figure A, and line up the
telescope bubble in alignment with foot screws A & B.
Note that the bubble moves always in the same direction
as your left thumb.
If the bubble is not centered, first grasp screws A & B so
that both thumbs are moving in opposite directions,
B
B
either toward each other or away from each other, in
Figure B
Figure A
order to make the bubble centered. Then turn the
C
telescope to the position as shown in figure B, turn the foot
C
screw C to make bubble centered. Now, the instrument
should be leveled up, but to be certain, double-check.
Rotate the instrument by any angle, and the bubble should
always be centered. Otherwise, please make calibration for
the bubble.
B
If the bubble leans to the right side, adjust screws A & B as
B
figure C shows, in order to remove one half the error.
Figure D
Remove the other half of the error by adjusting the two bubble level
Figure C
screws as shown in figure E, i.e. loose one screw while tightening
the other screw. The instrument is calibrated when the bubble
Bubble level
remains center as the telescope is rotated throughout a 360° rotation.
If the bubble leans to the left side, turn screws A & B as shown in
figure D, and repeat the steps as described above.
Figure E
Prepared By: Tim Wojo
Revision: 1-050309
Page 6 of 9