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2. PREPARATION
2.1 UNPACKING AND STORING
· Unpacking
Place the case lightly with the cover upward, and unlock the case, take out the instrument.
· Store of instrument
Cover the telescope cap, place the instrument into the case with the vertical clamp screw and circular vial
upwards (Objective lens towards tribrach), and slightly tighten the vertical clamp screw and lock the case.
2.2 INSTRUMENT SETUP
Mount the instrument on a tripod. Level and center the instrument precisely.
Operation Reference:
1. Leveling and Centering the Instrument by plumb bob.
1) Setting up the tripod
a. Extend the legs to suitable length, make the tripod head approximately leveld to the ground and
tighten the leg screws.
b. Make the center of the tripod and the occupied point approximately on the same plumb line.
c. Step on the tripod to make sure if it is well stationed on the ground.
2) Fix the instrument on the tripod.
Place the instrument carefully on the tripod head and slide the instrument by loosening the tripod
screw. If the plumb bob is positioned right over the center of the point, slightly tighten the tripod.
3) Roughly leveling the instrument by using the circular vial.
a. Turn the leveling screw A and B to move the bubble in the circular vial, in which case the bubble is
located on a line perpendicular to a line running through the centers of the two leveling screw being
adjusted.
b. Turn the leveling screw C to move the bubble to the center of the circular vial.
4) Precisely leveling by using the plate vial.
a. Rotate the instrument horizontally by loosening the Horizontal Clamp Screw and place the plate
vial parallel to the line connecting leveling screw A and B, and then bring the bubble to the center of
the plate vial by turning the leveling screws A and B.
