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4. ES FUNCTIONS
Sighting collimator
Use sighting collimator to aim the ES in the direction of the measurement
point. Turn the instrument until the triangle in the sighting collimator is
aligned with the target.
Instrument height mark
The height of the ES is as follows:
• 192.5mm (from tribrach mounting surface to this mark)
• 236mm (from tribrach dish (TR-102) to this mark)
"Instrument height" is input when setting instrument station data and is the
height from the measuring point (where ES is mounted) to this mark.
Trigger Key
Press the trigger key when the ES is in the OBS mode or when [MEAS]/
[STOP] is indicated on the display unit. You can start/stop measurement.
In the screen displaying [AUTO], press trigger key to perform automatic
operation from distance measurement to recording.
Laser-pointer Function
A target can be sighted with a red laser beam in dark locations without the
use of the telescope.
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