Topcon GB-500, Руководство оператора

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Base Checks & Adjustments
Topcon GB-500 Operator’s Manual
A-4
Adjusting the Plate Level
1. Adjust the level adjustment capstan screw, with the
accessory adjusting pin and return the bubble to the center
of the plate level. This corrects only half of the
displacement (Figure A-3).
2. Correct the remaining half of the bubble displacement with
the leveling screws as described above.
3. Rotate the instrument 180° or 200g around the vertical axis
once more and check bubble movement (Figure A-2 on
page A-3). If the bubble is still displaced, then repeat the
adjustment.
Figure A-3. Adjusting the Plate Level
Level adjustment
capstan screw
Half amount of
displacement