MTS600 Instruction Manual
80
②
Next use the leveling screws and coincide the point and center mark.
③
Revolve the instrument 180
°
or 200g around the vertical axis, and check the
center mark. If it is coincided to the point, then further adjustment is not
required. Otherwise, repeat the adjustment.
Appendix: Verification and correction of the laser plummet
Some series of MTS-600 use laser plummet, the verification and inspection method is as
follows:
●
Check
①
Aiming the center mark of the laser plummet at one clear ground point
②
Rotate the apparatus 180 degrees or 200g around the vertical shaft, observe the laser
point, if the ground point is still at the laser point,, it need no correction, otherwise, you
should correct it according to the following steps.
●
Adjustment
①
Open the mask of the eye piece of the telescope of the laser plummet, you can see 4
correction screws, use correcting needle to turn them to make the center mark of the
laser plummet move to the ground point, the offset is half of the offset value.
②
Use foot screws to make the ground point falls on the center mark of the laser plummet.
③
Rotate the apparatus another 180 degrees or 200g around the vertical shaft, check if
the laser point falls on the ground point, if so, it needs no correction, otherwise, you
should repeat the previous correction step.
Adjustment screws
1/2 of displacement
Half of the offset
Correcting screw
