Leica Builder T User Manual page 171

Set Hz correction
(c)
Check & Adjust
Field
<Hz-Correction:>
Option Field Description
On The horizontal angles are corrected for the line
of sight and if <Compensator: On> transversal
tilt errors.
Off Horizontal angles are not corrected.
Builder
After switching on the instrument, the
setting is automatically reset to <Hz-
Correction: On >.
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