MIL-R-3295B, MILITARY SPECIFICATION: REGULATOR, AIR PRESSURE, PROTECTIVE SHELTER, M1 (18-DEC-1958) [NO S/S DOCUMENT]

MIL-R-3295B, MILITARY SPECIFICATION: REGULATOR, AIR PRESSURE, PROTECTIVE SHELTER, M1 (18-DEC-1958) [NO S/S DOCUMENT]., This specification covers one type of regulator for protective shelters.