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1. Set up the theodolite at a fixed point and level the instrument. 2. Aim the instrument in the direction you want to measure. 3. Make sure the vertical line of sight is at the same height as the object you are measuring. 4. Rotate the instrument to the right until the vertical crosshair is level wRead more
1. Set up the theodolite at a fixed point and level the instrument.
See less2. Aim the instrument in the direction you want to measure.
3. Make sure the vertical line of sight is at the same height as the object you are measuring.
4. Rotate the instrument to the right until the vertical crosshair is level with the top of the object.
5. Read the vertical angle on the scale.
6. Subtract the vertical angle from 90 degrees to determine the height of the object.