Answer to Question #115238 in Geomatics for Nontobeko zama

Question

How do calculate compass bearing from point A to B 231°

Answer 1

Align the edge of your compass along the line that connects A and B.

Turn the bearing so that it points toward North parallel to the grid lines. Name this angle α, assume α=231°.

Add magnetic variation ν if applicable. Assume ν=3°.

Hand your compass before you and turn your body for angle τ until the magnetic needle with N on the arrow is aligned with the arrow that is drawn in the bearing. Assume τ=23°

The magnetic bearing will be

$$MB=231+3+23=257^\circ.$$