WWII US Navy NAVSHIPS 900-576 Cathode Ray Oscillograph OBL-2 Manual 1945 USS Oceanus

Original World War II U.S. Navy Bureau of Ships (NAVSHIPS) Instruction Book for the Cathode Ray Oscillograph Model OBL-2. This manual was manufactured by Reiner Electronics Co., Inc. under Navy contract NXsr 41057 and approved 15 March 1945.

An especially desirable feature is the original ownership markings identifying the manual as having been used aboard USS Oceanus (ARB-2), an Aristaeus-class battle damage repair ship. The cover also bears a period receipt stamp dated February 13, 1950, documenting continued postwar naval service.

Cathode ray oscillographs (oscilloscopes) were critical diagnostic instruments used to test, calibrate, and troubleshoot radar, sonar, radio, and other electronic equipment aboard U.S. Navy vessels during and after WWII.

Item Details

• Publication: NAVSHIPS 900-576
• Title: Instruction Book for Cathode Ray Oscillograph Model OBL-2
• Equipment: Model OBL-2 Cathode Ray Oscillograph
• Manufacturer: Reiner Electronics Co., Inc., New York, NY
• Issued By: U.S. Navy Bureau of Ships
• Contract: NXsr 41057
• Approval Date: March 15, 1945
• Original WWII issue
• Marked for service aboard USS Oceanus (ARB-2)
• Period Navy receipt stamp dated Feb. 13, 1950

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