WWII US Navy NAVSHIPS 91277 Crystal Calibrated Frequency Indicating Equipment Manual LM-18 Bureau of Aeronautics

Original World War II U.S. Navy technical manual covering Crystal Calibrated Frequency Indicating Equipment. This publication is identified as NAVSHIPS 91277 and was produced for the Bureau of Aeronautics, Navy Department.

The manual contains operating and maintenance information for this specialized radio/electronic test equipment used in military communications and aviation applications. The publication remains housed in its period blue binder and retains strong display appeal for collectors of WWII naval electronics, radar, and communications equipment.

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