MIL-F-7847 › Complete Document History
Frequency Meter, an/USM-26


Obsolete Revision Information:
   NOT - FREQUENCY METER, AN/USM-26 - Feb. 14, 1977
   REVISION B - FREQUENCY METER, AN/USM-26 - March 15, 1964
   AMENDMENT 2 - FREQUENCY METER, AN/USM-26 - Jan. 1, 1960