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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Good original condition with honest age and use
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Connecticut
The obverse depicts Lee in military uniform with the Latin inscription honoring his leadership
channel selector
WWII US Navy NAVSHIPS 900,227(A) OBL-1 Cathode Ray Oscillograph Manual 1945 DuMont Men's Clothing Good original condition with honestOriginal World War II U. S. Navy Bureau of Ships Instruction Book for the Cathode Ray Oscillograph, Navy Model OBL 1. Published as NAVSHIPS 900,227(A) and approved 20 September 1945. Manufactured by Allen B. DuMont Laboratories, Inc. of Passaic, New Jersey, one of the pioneering companies in American electronics and cathode ray tube development. The OBL 1 oscillograph was designed as a portable electronic test instrument used by Navy technicians for
