Prexiso T.O.2 Manual Del Usuario página 28

Measurement of
horizontal angle
Operation Method
1. Reset of horizontal angle
Press 0SET button.
The horizontal angle returns to zero.
2. Selecting the direction of measurement of horizontal angle
Press R/L button to change the direction of measure-
ment of horizontal angle.
• When HR is displayed, the angle increases with
clockwise turning of the collimation unit.
• When HL is displayed, the angle increases with
counter-clockwise turning of the collimation unit.
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