{"product_id":"wwii-u-s-navy-an-apm-3-portable-test-set-manual-confidential-western-electric","title":"WWII U.S. Navy AN\/APM-3 Portable Test Set Manual – Confidential – Western Electric","description":"\u003cp\u003e\u003cspan\u003eOffered here is an original U.S. Navy Preliminary Instruction Book for the AN\/APM-3 Portable Test Set (Models 1–200), manufactured by Western Electric Co., Inc. This manual is marked “Confidential” and was issued under U.S. Navy contract, making it a desirable piece of WWII-era military electronics documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe AN\/APM-3 was a portable diagnostic unit used for testing and servicing radar and electronic systems in aircraft and ground installations. Manuals of this type were essential for maintaining early radar, communications, and signal equipment during WWII and into the early Cold War period.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDetails:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eEquipment: AN\/APM-3 Portable Test Set\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eType: Preliminary Instruction Book\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eManufacturer: Western Electric Co., Inc.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eU.S. Navy Contract Marked\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClassification: Confidential\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSerial Number: 85\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHistorical Significance:\u003cbr\u003eThis manual relates directly to early military electronics and radar support systems. Equipment in the AN\/APM series was used by Army and Navy technicians to diagnose and maintain complex electronic systems, making this an excellent addition to any collection focused on WWII aviation, radar, or Signal Corps technology.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eComplete and intact\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNormal age-related wear and toning\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLight creasing consistent with use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNo major damage observed\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlease review photos for full condition details.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCollector Appeal:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eOriginal WWII-era military documentation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e“Confidential” marked issue\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWestern Electric manufacturer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStrong crossover appeal to radar, aviation, and electronics collectors\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Whiskey Rebellion Antiques","offers":[{"title":"Default Title","offer_id":42866653724749,"sku":null,"price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/9229\/8829\/files\/IMG-1654_ab905922-a726-4d09-ba90-50849d6a90f1.heic?v=1776090806","url":"https:\/\/whiskeyrebellionantiques.com\/products\/wwii-u-s-navy-an-apm-3-portable-test-set-manual-confidential-western-electric","provider":"Whiskey Rebellion Antiques","version":"1.0","type":"link"}