MIL-I-6856C, MILITARY SPECIFICATION: INDICATOR, PRESSURE, SYNCHRO (03 JAN 1961) [S/S BY MIL-DTL-6856D]
MIL-I-6856C, MILITARY SPECIFICATION: INDICATOR, PRESSURE, SYNCHRO (03 JAN 1961) [S/S BY MIL-DTL-6856D]., This specification covers three hermetically sealed clamp-mounted 1-1/2 inch single synchro pressure indicators.