1959 USAF T.O. 33K3-4-1 Frequency Equipment Calibration Field Technical Manual

Original vintage U.S. Air Force technical publication covering field calibration procedures for frequency equipment.

Officially designated T.O. 33K3-4-1 – Calibration Instructions-Field, Frequency Equipment, this publication is dated 10 April 1959 and was published under authority of the Secretary of the Air Force.

The manual is housed in a heavy-duty black USAF PUBLICATIONS binder with metal ring/post-style binding hardware.

Details include:

• T.O. 33K3-4-1
• Calibration Instructions – Field
• Frequency Equipment
• Dated 10 April 1959
• Published under authority of the Secretary of the Air Force
• Period USAF Publications binder
• Cold War-era military electronics/test equipment reference

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