L---rod section read on both stadia hairs
K---multiplication factor K = 100
C---additative constant C = 0
Where natural light conditions are inadequate for reading the circles, plug-in lamps
are used to illuminate the display. When using electric illumination, the illumination
mirror must be replaced by a plug-in lamp, and the lever under the optical sight must
be pushed towards the telescope objective until it reaches its stop. The light from
the vertical circle plug-in lamp is then reflected off a mirror inside the telescope
To prevent undue battery discharge when not in use, switch off the power supply at
Level up as described before. If the bubble will not remain centered within one
division for all positions of the alidade, adjust as follows:
1.1 With horizontal clamp open, turn alidade so that plate level is parallel to the line
joining any two footscrews A and B. Centre bubble by turning A and B by equal and
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