The device being in its reference position and the zero of the horizontal scale not being modified after stationing, the operator takes an azimuthal reading LA on point A then an LB reading on B and deduces the angle ASB :
Definition :
The bearing of a direction AB is the horizontal angle measured positively in the clockwise direction between the ordinate axis of the projection system used and this direction AB .
It is denoted GAB Mathematically, it is the positive an gle in the clockwise direction between the ordinateb axis of the reference and the line (AB).
A bearing is always between 0 and 400 geo. GAB is the angle betwee, the North (ordinates) and the direction AB
GBA is the angle between the North and the BA direction. The relartionship between GAB and GBA is :
0 Comments