The Magnetic Multi Shot is a magnetic survey instrument used to simultaneously determine the inclination (drift angle) and the magnetic direction of the bore hole. The data is recorded sequentially on a strip of photographic film. The Multi-Shots are used in conjunction with a non magnetic drill collar or run in an open hole.

The permanent and easy to read recording on the film stripe is a result of photographing three assemblies, all superimposed about a common axis. The three assemblies are the angle indicator, the inclinations  and the compass card.