Measurement of Horizontal Angles: Top 3 Methods | Theodolite Surveying | Surveying

There are three methods of measuring horizontal angles: 1. Ordinary Method. 2. Repetition Method. 3. Reiteration Method. 1. Ordinary Method (Fig. 9.6.): To measure horizontal angle AOB: (i) Set up the theodolite at station-point O and level it accurately. (ii) Set the vernier A to the zero or 360° of the horizontal circle so do this, loosen the upper clamp [...]