{"product_id":"1936-air-ministry-raf-mark-xiii-height-indicator-altitude-meter-6a-445-made-by-short-and-mason","title":"1936 Air Ministry RAF Mark XIII Height Indicator \/ Altitude Meter 6A\/445 Made By Short And Mason","description":"\u003ch1\u003e1936 Air Ministry RAF Mark XIII Height Indicator \/ Altitude Meter 6A\/445 Made By Short And Mason\u003c\/h1\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThis vintage aircraft cockpit gauge is a 1936 Air Ministry RAF Mark XIII Height Indicator \/ Altitude Meter 6A\/445 Made By Short And Mason.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe aneroid based 'simple altimeter' XIII was introduced in 1930s aircraft just prior to WW2, and during WW2 in the Fleet Air Arm including training aircraft, and early versions of warbirds including the Supermarine Spitfire, Fairey Light Bomber and the Sunderland Stirling.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn very good cosmetic condition, with some minor surface blemishes, it has not been tested.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eApproximate Size:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFace Diameter:  9cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDepth:  7cm (excluding knob and fittings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMarked:-\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e6A\/445 (\u003cem\u003ewhere 6A is the RAF stores number for Aircraft Engine and Flying Instruments, Accessories and Spares\u003c\/em\u003e)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMark XIII (probably XIIIC)\u003c\/li\u003e\n\u003cli\u003eMaximum Height- 30,000 Feet\u003c\/li\u003e\n\u003cli\u003eAM (Air Ministry)\u003c\/li\u003e\n\u003cli\u003eNo. 8529\/36\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe XIII meter relied on height difference between the outward and inward aerodromes in flight, as opposed to early in WW2 when it changed to altitude as this measurement is less dependent on correcting for temperature and pressure.\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-copy-service-computed-style='font-family: \"Google Sans\", Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px none rgb(10, 10, 10);' data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003eThe MkXIIIB variant measured from 0 to 20,000 ft, and the MkXIIIC measured 0 to 30,000 ft.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/aircraft-collectibles-aviation-aeronautica\" target=\"_blank\"\u003evintage aircraft spares.\u003c\/a\u003e\u003cb\u003e\u003cspan face=\"Verdana\" style=\"font-family: Verdana;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca name=\"development\"\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Air Ministry (RAF)","offers":[{"title":"Default Title","offer_id":57075521913207,"sku":null,"price":94.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/files\/1936_Air_Ministry_RAF_Mark_XIII_Height_Indicator_Altitude_Meter_6A_445_Made_By_Short_And_Mason_1.jpg?v=1778241567","url":"https:\/\/mullardantiques.co.uk\/products\/1936-air-ministry-raf-mark-xiii-height-indicator-altitude-meter-6a-445-made-by-short-and-mason","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}