MIL-P-62420, MILITARY SPECIFICATION: PERISCOPE, TANK (23-JAN-1997) [S/S BY MIL-PRF-62420A]

MIL-P-62420, MILITARY SPECIFICATION: PERISCOPE, TANK (23-JAN-1997) [S/S BY MIL-PRF-62420A]., This specification covers the laser protected tank periscope assemblies. Unless otherwise specified herein, these items will be referred to as periscopes. These periscopes are used as unity vision devices in combat type vehicles.