50
Adjust
1. Adjust circular bubble after plate bubble is centered.
2.Loosen the screw (one or two) opposite with bubble deflective direction;
3.Tighten the screw on the direction accordant deflective until circular bubble is centered;
4.Adjust three adjustment screws for several times until circular bubble is centered;
5.The force power fixing three adjustment screws must be consistent when circular level is centered at
last.
12.3 INCLINATION OF RETICLE
Check
1. Sight object A through the telescope and lock the horizontal and vertical clamp screws.
2. Move object A to the edge of the field of view with the vertical tangent screw (point A′).
3. Adjustment is not necessary if object A moves along the vertical line of the reticle and point A′ still in the
vertical line.
As illustrated，Ａ′offsets from the center to the cross hair tilts, then need to adjust the reticle.
Adjust
1. If the object A does not move along with the vertical line, firstly remove the eyepiece cover to expose
the three or four reticle adjusting screws.
2. Loosen all the reticle adjusting screws uniformly with an adjusting pin. Rotate the reticle around the
sight line and align the vertical line of the reticle with pointA‟.
3. Tighten the reticle adjusting screws uniformly. Repeat the inspection and adjustment to see if the
adjustment is correct.
4. Replace the eyepiece cover.
12.4 PERPENDICULARITY BETWEEN LINE OF SIGHT AND HORIZONTAL AXIS
(2C)
Check
1. Set object A at about 100 meters away the same height as the instrument, and make the vertical angle
with ± 3° . Then level and center the instrument and turn on the power
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