User Manual

Total Station Manual
202
If the bubbles is not in the center, use the correction needle or six angle wrench
to adjust the correction screw which under the bubble to make the buble to the center.
For calibration, you shall first loosen the calibration screw (1 or 2) which opposite to
the direction of the bubble offset, then tighten the other correction screw in the offset
direction to make the bubble in the center. When the bubble is in center, makesurethe
pressures of the three calibration screws are consistent.
3.3 Telescope reticle
 Checkout
After leveling the instrument find a target A with the telescope, make the center
of the crosshair focused on target A and fixed horizontal and vertical brake
handwheel.
1. Rotate telescope vertical micrometer handwheel, move A point to the edgeofthe
field of view (A 'points).
2. If A moves along the vertical line of the crosshair, but A point is still in the
vertical line, as the left picture, the crosshair doesn't need to calibrate. If A point
deviate from vertical line center, as the right pictured, the crosshair is slant, so
need to calibrate the reticle.
 Calibration
1. First, take down the reticle cover between telescope eyepiece and focusing
handwheel, and you can see four fixed screw of the reticle bed (sees attached
figure).
2. Unscrew the three fixed screw evenly with screwdriver, rotate the reticle around
collimation axis, to make A point on the vertical line of the reticle.
3. Tighten the screw evently, test the calibration results with the above methods.
4. Put the protective cover back.