MIL-T-16049C (AMENDMENT-3), MILITARY SPECIFICATION: TACHOMETERS: ELECTRICAL; SELF-GENERATING; MECHANICAL, FIXED MOUNTING AND HAND HELD; AND VIBRATING REED (03-DEC-1986) [S/S BY A-A-59734]
MIL-T-16049C (AMENDMENT-3), MILITARY SPECIFICATION: TACHOMETERS: ELECTRICAL; SELF-GENERATING; MECHANICAL,
FIXED MOUNTING AND HAND HELD; AND VIBRATING REED (03-DEC-1986) [S/S BY A-A-59734].