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

MIL-PRF-62420A, PERFORMANCE SPECIFICATION: PERISCOPE, TANK (23-JAN-1997) [SUPERSEDING MIL-P-62420] [S/S BY MIL-DTL-62420B]., 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.