MIL-PRF-17850B, PERFORMANCE SPECIFICATION: COMPASS, MAGNETIC, POCKET (08-FEB-2000) [SUPERSEDING MIL-C-17850A]

MIL-PRF-17850B, PERFORMANCE SPECIFICATION: COMPASS, MAGNETIC, POCKET (08-FEB-2000) [SUPERSEDING MIL-C-17850A]., This specification covers a compass, magnetic, pocket for emergency use.