WWII US Navy NAVSHIPS 900,227(A) OBL-1 Cathode Ray Oscillograph Manual 1945 DuMont Men's Clothing Connecticut

Connecticut

Good original condition with honest age and use

The blade shows an attractive aged patina

Dated 1940 and stamped with the manufacturer’s mark “E

Purpose: Concealed carry and personal defense — it blends the classic aesthetics and controls of the 1911 with reduced size and weight for everyday carry

WWII US Navy NAVSHIPS 900,227(A) OBL-1 Cathode Ray Oscillograph Manual 1945 DuMont Men's Clothing ConnecticutOriginal 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