4.1.1. Place the tripod
First, put the tripod leg in the proper position and tighten the
locking screws.
4.1.2. Attaching the instrument to the tripod head
Place the instrument carefully on the tripod head, and move
the instrument slowly by loosening adjusting screw. Align the
plumb bob with the point on the ground when aligned, tighten
the adjusting screw.
4.1.3. Initial rough leveling the instrument with circular level
a. Use leveling screws 1, 2 to move the bubble of the circular
level until the bubble of the circular level is located on a line
perpendicular to a line running through the centers of the
two leveling screw adjusted.
b. Revolve the leveling screw 3 to shift the bubble to the center
of the circular.
6
4.1.4 Further leveling the instrument with plate level
a. Loose horizontal motion clamp and revolve the instrument.
By adjusting leveling screw 1, 2, the plate level vial is parallel
to a line running through the centers of two leveling screws,
and place the bubble in the center of the level vial.
b. Next, revolve the instrument 90 (100g) around its vertical
axis and use the remaining screw 3 to center the bubble
once more.
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bubble bubble
