Product Manual

30
9.4 Optical Plummet
Check
(1)Set-up the instrument on tripod and fix it.
(2)Place a cross-mark under the instrument directly.
(3)Rotate the leveling screws, make the intersection of
cross hair superpose to the Point.
(4)Rotate the instrument 180°(200g), Confirm if
intersection of cross hair superpose to the Point. No
adjustment is necessary if the intersection of cross hair
superpose to the Point. If not, proceed with the
following adjustment.
(1)Set-up the instrument on tripod and fix it.
(2)Place a cross-mark under the instrument directly.
(3)Rotate leveling screws, make the intersection of cross hair superpose to the Point.
(4)Rotate the instrument 180°(200g), remove the eyepiece shield, bring the Point
half way back to the intersection of cross hair by adjusting the adjusting pin.
(5)Repeat procedure (3) (4) until the intersection of cross hair superpose to the Point
by rotating the instrument
Fig. 21
Cross mark
Plummet
center