Describe quadrantal bearing system. State the purpose it is used.
Quadrantal Bearing –
1. The magnetic bearing of line measured clockwise or anticlockwise from north or south pole whichever is nearer.
2. These bearings are also called as reduced bearings.
3. These are observed by surveyors compass
4. Its value is between 0 0 to 900.
5. It consists of four quadrants - N-E, S-E, S-W, N-W.
Purposes
1. It is used to measure bearing of survey lines in a closed traverse.
2. It is used to calculate back bearing for respective quadrants.