{"product_id":"wwii-us-navy-navships-900-227a-obl-1-cathode-ray-oscillograph-manual-1945-dumont","title":"WWII US Navy NAVSHIPS 900,227(A) OBL-1 Cathode Ray Oscillograph Manual 1945 DuMont","description":"\u003cp\u003e\u003cspan\u003eOriginal \u003c\/span\u003e\u003cspan\u003eWorld War II U.S. Navy Bureau of Ships Instruction Book\u003c\/span\u003e\u003cspan\u003e for the \u003c\/span\u003e\u003cspan\u003eCathode-Ray Oscillograph, Navy Model OBL-1\u003c\/span\u003e\u003cspan\u003e. Published as \u003c\/span\u003e\u003cspan\u003eNAVSHIPS 900,227(A)\u003c\/span\u003e\u003cspan\u003e and approved \u003c\/span\u003e\u003cspan\u003e20 September 1945\u003c\/span\u003e\u003cspan\u003e. Manufactured by \u003c\/span\u003e\u003cspan\u003eAllen B. DuMont Laboratories, Inc.\u003c\/span\u003e\u003cspan\u003e of Passaic, New Jersey, one of the pioneering companies in American electronics and cathode-ray tube development.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe OBL-1 oscillograph was designed as a portable electronic test instrument used by Navy technicians for servicing, calibration, and troubleshooting radar, communications, and other electronic systems during the closing months of World War II and into the early postwar period.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eItem Details\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003ePublication:\u003c\/span\u003e\u003cspan\u003e NAVSHIPS 900,227(A)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eTitle:\u003c\/span\u003e\u003cspan\u003e Instruction Book for Cathode-Ray Oscillograph, Navy Model OBL-1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eEquipment:\u003c\/span\u003e\u003cspan\u003e Navy Model OBL-1 Cathode-Ray Oscillograph\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eManufacturer:\u003c\/span\u003e\u003cspan\u003e Allen B. DuMont Laboratories, Inc., Passaic, New Jersey\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eIssued By:\u003c\/span\u003e\u003cspan\u003e U.S. Navy Department, Bureau of Ships\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eContract No.:\u003c\/span\u003e\u003cspan\u003e NXsr-33622\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eApproval Date:\u003c\/span\u003e\u003cspan\u003e September 20, 1945\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eOriginal WWII\/early postwar Bureau of Ships technical manual\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eFREE SHIPPING\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e#5\u003c\/span\u003e\u003c\/p\u003e","brand":"Whiskey Rebellion Antiques","offers":[{"title":"Default Title","offer_id":43324760817741,"sku":null,"price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/9229\/8829\/files\/IMG-1058.heic?v=1785332818","url":"https:\/\/whiskeyrebellionantiques.com\/products\/wwii-us-navy-navships-900-227a-obl-1-cathode-ray-oscillograph-manual-1945-dumont","provider":"Whiskey Rebellion Antiques","version":"1.0","type":"link"}