1
Q
What is the purpose of a Theodolite?
A
To provide an artificial horizon and vertical index for checking levels and verticals.
2
Q
Where would theodolite be positioned for a three guyed mast?
A
Direct one Theodolite inline with one guy but opposite to its position, direct a second Theodolite at 90degress to first Theodolite.
3
Q
Where would a theodolite be positioned for a four guyed mast?
A
Direct one Theodolite inline with one guy, direct a second Theodolite at a guy 90degress to first Theodolite.
4
Q
Name three precautions to take when working with theodolites?
A
- Do not submerge instrument in water or any other chemical.
- Do not drop instrument.
- Make sure theodolite is locked in its case while transporting.
- When raining, use cover over instrument.
- Do not look directly into the sunlight through the telescope on the instrument.
- Using a wooden tripod can protect the instrument from vibrations better than an aluminium tripod would.
- Using the sunshade attachment is important; any sudden temperature changes can cause incorrect readings.
- Never hold the instrument by the telescope.
- Always have a substantial level of battery power on your instrument.
- Always clean the instrument after using.
- Dust in the case or on the instrument can cause damage.
- If the theodolite is damp or wet, allow it time to dry out before storing it in its case.
- When storing, make sure that the telescope on the instrument is in the vertical position.
- When the theodolite is being re-levelled, the position over the ground point must be checked and rechecked to ensure the same position.
- When the theodolite is being repositioned over a ground point, the level must be checked and rechecked to ensure its accuracy.
5
Q
What must accompany the theodolite when it is required to undergo calibration?
A
The tripod
