MTS600 Instruction Manual
79
⑥ Loosen the vertical motion clamp and tangent screw and plunge the instrument
180°or 200g and fix a sight on point C, which should coincide with the previous
point B.
⑦ If point B and C do not coincide, adjust in the following order:
● Adjustment
①Unscrew the cross-hair adjustment section cover.
②Find point D at a point between points C. B, which
should be equal to 1/4 the distance between points B and
C, and measured from point C. This is because the
apparent error of BC is four times of the real error since
the telescope has been reversed twice during checking
operation.
③ Shift the vertical cross-hair line and coincide it with
point D, by revolving the left and right capstan adjustment screws. Upon
completing the adjustment, repeat the checking operation once more. If point B
and C coincide, further adjustment is not required. Otherwise, repeat the
adjustment.
11.4 Optical plummet
● Check
① Coincide the center point with the center mark of optical plummet telescope by
adjusting optical plummet.
② Revolve the instrument 180°or 200g around the vertical axis and check the
center mark. If the point is properly centered in the center mark, adjustment is not
required. Otherwise, adjust in the following manner:
● Adjustment
① Unscrew the adjustment section cover of the optical plummet telescope
eyepiece, by revolving it in the counterclockwise direction and take it off. This
will expose four capstan adjustment screws which should be adjusted with the
accessory adjusting pin to shift the center mark to the point. However, correct only
1/2 of the displacement in this manner.
To Next Page
Loading...
