Zoom | 176Calibration
11 Calibration
11.1 Overview
Description GeoMax instruments are manufactured, assembled and adjusted to a high
quality. Quick temperature changes, shock or stress can cause deviations and
decrease the instrument accuracy. It is therefore recommended to calibrate
the instrument from time to time. This can be done in the field by running
through specific measurement procedures. The procedures are guided and
have to be followed carefully and precisely as described in the following chap-
ters. Some other instrument errors and mechanical parts can be adjusted
mechanically.
Electronic cali-
bration
The following instrument errors can be checked and calibrated electronically:
• Horizontal collimation error, also called line-of-sight error.
• Vertical index error, and simultaneously the electronic level.
)
For determining these errors, it is necessary to measure in both faces, but the
procedure can be started in any face.
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