MIL-I-22596C, MILITARY SPECIFICATION: INDICATOR, TACHOMETER, ELECTRIC, 0-120 RPM, 2-INCH SIZE (23-DEC-1975)

MIL-I-22596C, MILITARY SPECIFICATION: INDICATOR, TACHOMETER, ELECTRIC, 0-120 RPM, 2-INCH SIZE (23-DEC-1975)., This specification covers design requirements and all performance requirements for procurement of hermetically sealed, remote indicating, percent RPM tachometer indicators.