{"product_id":"vintage-world-war-ii-us-army-forces-navigational-aids","title":"Vintage World War II US Army Forces Navigational Aids","description":"\u003cp\u003eOffered are two World War II navigational aids. The black plastic disk is a Time Distance Computer Type D-4 U.S. Army Air Forces, circa 1943. The disc measures approximately 4 3\/8\" in diameter with a metal center core. Made in USA by J.B. Carroll Co.\u003c\/p\u003e\n\n\u003cp\u003eFront Scale: True Altitude, Air Temp, Press. Alt. (ETA, Air Speed ) \u003cbr\u003e\nBack Scale: Cal. Air Speed, Air Temp, True A.S. (pressure Altitude, Density Altitude)\u003c\/p\u003e\n\n\u003cp\u003eThe white disk is made of a heavy card stock with a metal center core. It is a time-distance computer. The disk measures approximately 3 1\/2\" in diameter. No maker's information.\u003c\/p\u003e\n\n\u003cp\u003eFront Scale: Miles, Hours, Minutes \u003cbr\u003e\nBack Scale: Altitude, Air Speed, Temperature Centrigrade\u003c\/p\u003e\n\n\u003cp\u003eNice military collectibles in very good vintage condition.\u003c\/p\u003e","brand":"Duckwells","offers":[{"title":"Default Title","offer_id":50725986828546,"sku":"jis1791870584286","price":33.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/3463\/1170\/files\/vintage-world-war-ii-us-army-forces-navigational-aids_1.jpg?v=1791870601","url":"https:\/\/chictrendluxe.shop\/products\/vintage-world-war-ii-us-army-forces-navigational-aids","provider":"My Store","version":"1.0","type":"link"}