MIL-PRF-7605F (AMENDMENT 1), PERFORMANCE SPECIFICATION: REGULATOR, OXYGEN, DEMAND, PRESSURE BREATHING, TYPE A-21 (22 OCT 1998) [SUPERSEDING MIL-R-7605E]

MIL-PRF-7605F (AMENDMENT 1), PERFORMANCE SPECIFICATION: REGULATOR, OXYGEN, DEMAND, PRESSURE BREATHING, TYPE A-21 (22 OCT 1998) [SUPERSEDING MIL-R-7605E]., This amendment forms a part of MIL-PRF-7605F, dated 20 November 1997 and is approved for use by all Departments and Agencies of the Department of Defense.