Component parts of digital theodolite and their purpose:
1. Control panel: to perform operations by giving commands to measure horizontal and vertical angles in left or right direction, to switch on or off the instrument.
2. LCD screen : to get the display of results.
3. Horizontal clamp and slow motion screw: to control the movement of telescope in horizontal plane.
4. Vertical clamp and slow motion screw: to control the movement of telescope in vertical plane.
5. Rechargeable battery: To provide the power to operate electronic circuit of instrument.
6. Compensator: For automatic fast and steady leveling.
7. Foot screws: for leveling of instrument by usual method.