Historical information

The M6 was the standard periscope used on the Sherman tanks. There are two large prisms assembled in each end of a metal shell. Frequent problems with moisture and condensation resulted in the development of a new periscope made from a solid block of plastic with a reflecting surface at each end.

Significance

Wartime significance.

Physical description

Sherman Tank Periscope Type : M6.

Inscriptions & markings

Periscope M6. Minneapolis - Honeywell Regulator Company. #96812 1942. D.A.