Angle Measurement System; Measuring Principle; Single-Axis Compensator 5; Control Panel - Hilti POT 10 Manual De Instrucciones

Horizontal angle (HA)
Alidade
Tribrach
Tool standpoint

3.4 Angle measurement system

An electronic reading system is used for vertical and horizontal circle readings.

3.4.1 Measuring principle

The tool provides a reading from one of the circles.
The included angle is the difference between two readings from a circle.

3.4.2 Single-axis compensator 5

Tool tilt in the direction of the telescope is corrected with the aid of the electronic level (compensator).
This ensures that vertical angle and inclination are always relative to the vertical or horizontal plane.
The single-axis compensator measures tool tilt in the direction of the telescope, i.e. in the target direction.
This ensures that residual inclination has no influence on vertical angle measurement.

3.5 Control panel

The control panel features a display and a total of 6 buttons each marked with a symbol.
A horizontal angle is the difference between two readings from the ho-
rizontal circle. However, a reading from one of the circles is also often
described as an angle.
The rotatable center part of the theodolite is known as the alidade.
This part usually carries the control panel, bubble levels for leveling and,
inside, the horizontal circle.
The tool stands on the tribrach which, for example, can be mounted on a
tripod.
The tribrach has three points of contact which can be adjusted vertically
by adjusting screws.
This is the point at which the tool is set up - usually over a point marked
on the ground.
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