Vintage USAF Navy AN/USM-25A & B Oscilloscope Service Manual AN 16-30USM25-2

Original U.S. military technical handbook for Oscilloscope AN/USM-25A & AN/USM-25B, covering service instructions for this Cold War-era military electronic test instrument.

The title page identifies the publication as:

• Oscilloscope AN/USM-25A & B
• Handbook – Service Instructions
• Manual No. AN 16-30USM25-2
• Published under authority of the Secretary of the Air Force and the Chief of the Bureau of Aeronautics

The AN/USM-25 series is documented in period military test-equipment references, which specifically list AN 16-30USM25-2 as the Service Instructions manual.  The National Electronics Museum collection also catalogs technical documentation for the AN/USM-25A and AN/USM-25B, confirming surviving manuals for this equipment series. 

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