12
2. PREPARATION FOR MEASUREMENT
2.1 UNPACKING AND STORE OF INSTRUMENT
· Unpacking
Place the case lightly with the cover upward, and unlock the case, take out the
instrument.
· Storing the 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 to the tripod. Level and center the instrument precisely to
ensure the best performance.
Operation Reference:
a. Level and center the instrument by plumb bob.
1) Set up the tripod
①First, extend the legs of the tripod to a suitable length, make the tripod head
approximately parallel to the ground and tighten the screws.
②Make the centre of the tripod and the occupied point approximately on the
same plumb line.
③Step on the tripod to make sure if it is well stationed on the ground.
2) Mount the instrument on the tripod.
Put the instrument carefully on the tripod head and level 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 level the instrument by adjusting the circular vial.
①Turn 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 .
②Turn the leveling screw C to move the bubble to the center of the circular vial.
To Next Page
Loading...