MIL-I-18997/2 (NOTICE 1), MILITARY SPECIFICATION: INDICATORS, PRESSURE, BOURDON TUBE CIRCULAR DIAL, OXYGEN SERVICE, BLEEDER TIP (3-1/2 AND 4-1/2 INCH SIZES) (08-OCT-1987) [S/S BY MIL-G-18997]
MIL-I-18997/2 (NOTICE 1), MILITARY SPECIFICATION: INDICATORS, PRESSURE, BOURDON TUBE CIRCULAR DIAL, OXYGEN SERVICE, BLEEDER TIP (3-1/2 AND 4-1/2 INCH SIZES) (08-OCT-1987) [S/S BY MIL-G-18997].