4 Setup
62 Spectra Precision FOCUS 30 User Guide
Tribrach Circular Level
1.
Level the instrument with the electronic instrument bubble.
2.
Remove the instrument from the tribrach.
3.
Use the provided adjustment key and adjust the bubble with the three bubble
screws. The bubble must be centered.
Fig. 4-51 Circular Level adjustment
C
Caution –
When adjusting the Circular Level with the three adjustment screws it is impor-
tant that the screws are correctly adjusted. When one screw is adjusted the two opposite
screw must be adjusted equally in the reverse direction, in order to keep the correct ten-
sion on the Circular level. Do not overtighten the screws.
Содержание Focus 30
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