{"product_id":"1970s-am5000-airflow-developments-ad-anemometer-in-its-original-yellow-leather-case","title":"1970s AM5000 Airflow Developments (AD) Anemometer in Its Original Yellow Leather Case","description":"\u003ch1 data-listing-id=\"675896204\"\u003e1970s AM5000 Airflow Developments (AD) Anemometer in Its Original Yellow Leather Case\u003c\/h1\u003e\n\u003cp data-listing-id=\"675896204\"\u003eThis wonderful looking hand held scientific instrument is a 1970s AM5000 Airflow Developments (AD) Anemometer in Its Original Yellow Leather Case. It has 8 vanes and a metres counter, an on\/off switch and a reset button.  An essential Health and Safety device as it would have been used to assess air flow in, e.g., a coal mine.\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003e\u003cstrong\u003eApproximate Size:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAnemometer diameter: 10.5cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003eDepth: 5.6 cm\u003c\/li\u003e\n\u003cli\u003eHeight: 22.5cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-listing-id=\"675896204\"\u003eThe polished steel air meter is in very good cosmetic and working condition but I can't attest as to its accuracy. T\u003cspan\u003ehere are a few surface scuffs and scratches commensurate with age and use. The plastic (bakelite) black legs fold down to form a handle. V\u003c\/span\u003e\u003cspan\u003eanes are stamped from single piece of metal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003e\u003cspan\u003eIts yellow covered leather transit case is intact but the leather handle has some breakages and the yellow cover is detaching itself from the case body in a few places.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003e\u003cspan\u003eIt comes with a brown paper inspection ticket with the stock\/DRG number 7372606. Stamped AFD No.2. And a Calibration Correction curve graph is located in the lid of the case.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eA very high quality measuring instrument for the industrial ephemera collector.\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003e\u003cstrong\u003eMarked:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eAD AM 500\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eBrit Pat. No. 1157368 \u003cem\u003e(filed in 1967 by Airflow Developments Ltd)\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eReg. Design No. 932306\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eCanadian Pat.No. 871822\u003c\/p\u003e\n\u003cp data-listing-id=\"675896204\"\u003eDated 25th May 1971\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eMechanical anemometers were a piece of safety equipment, invented by \u003cstrong\u003e\u003ca href=\"https:\/\/www.gracesguide.co.uk\/Benjamin_Biram\"\u003eBenjamin Biram\u003c\/a\u003e\u003c\/strong\u003e in 1844, to determine the volume of air entering or exiting mine workings. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-technology-scientific-engineering-imaging-medical-equipment-instruments-tools\" target=\"_blank\"\u003evintage technology.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNB: Accessories are shown for photographic purposes only and are not included in the sale.\u003c\/p\u003e","brand":"Airflow developments","offers":[{"title":"Default Title","offer_id":43883225022721,"sku":"","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/files\/1970s_AM5000_Airflow_Developments_AD_Anemometer_in_Its_Original_Yellow_Leather_Case.jpg?v=1763051415","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/1970s-am5000-airflow-developments-ad-anemometer-in-its-original-yellow-leather-case","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}