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12.11 RELATED PARTS FOR REFLECTOR
1. The Tribrach and Adapter for Reflector
The plate vial and optical plummet in the adapter and tribrach should be checked. Refer to Chapter 10.1
and 10.8. for more information.
2. Perpendicularity of the prism pole
As illustrated in Chapter 10.8, mark „+‟ on Point C, place the tine of the prism pole on the Point C and do
not move during the inspection. Place the two feet tine of Bipod on the cross lines of Point E and F. Adjust
the two legs “e‟ and “f” to make the bubble on the prism pole centered.
Set and level the instrument on Point A near the cross. Sight the tine of Point C with the center of reticle,
and fix the Horizontal Clamp Screw. Rotate the telescope upward to make D near the horizontal hair. Flex
the prism pole Leg “e” to make the D in the center of reticle. Then both Point C and D are on the central
line of reticle.
Set the instrument on Point B to another cross lines. With the same way to flex the Leg “f” to make Point
C and D on the central line of reticle.
Through the adjustment of the instrument on Point A and B, prism pole has been perpendicular. If the
bubble offsets from the center, adjust the three screws under circular vial to make the bubble centered.
Check and adjust again until the bubble is in the center of the vial from both directions of the prism pole.
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