{"product_id":"antique-heydes-aktino-photometer-exposure-meter","title":"Antique Heyde's Aktino Photometer Exposure Meter","description":"\u003ch1\u003eAntique Heyde's Aktino Photometer Exposure Meter\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eThis relic of photographic history is an Antique Heyde’s Aktino Photometer Exposure Meter made when cameras came without their own internal exposure meter (photometer), range finder, self timers, and electronic flashes.\u003c\/p\u003e\n\u003cp\u003eIn good, unboxed, cosmetic condition with some superficial surface scuffs. However, the photometer is \u003cspan style=\"text-decoration: underline;\"\u003enot \u003c\/span\u003eworking and the selling price has been reduced to reflect this. There is something loose rattling around inside and I haven’t been able to open it up to discover the cause.\u003c\/p\u003e\n\u003cp\u003eDespite the fact it is not working, this early exposure meter is still a great collectible. A nice addition to your collection of\u003ca rel=\"noopener\" href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-cameras-photographic-and-imaging-equipment-accessories\" target=\"_blank\"\u003e photographic accessories \u003c\/a\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/mullardantiques.co.uk\/collections\/vintage-photographic-and-imaging-equipment-accessories\" target=\"_blank\"\u003e\u003c\/a\u003eor vintage technology ephemera.\u003c\/p\u003e\n\u003cdiv class=\"lang:english\"\u003e\u003cstrong\u003eApproximate Dimensions\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eDiameter: 7.3cm\u003c\/li\u003e\n\u003cli\u003eDepth: 2.7cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe scale is calibrated in exposure times ranging from 1\/64 to 1500 seconds and f-stops from f 8 to f 45. Depending on the incidence of light, the measuring sensitivity (level 1, values 0-10 \/ level 2, values 10-20) is set using the small lever on the viewing side.\u003c\/p\u003e\n\u003cp\u003eIt was made by \u003ci\u003eGustav Heyde KG (GHD)\u003c\/i\u003e, Dresden, Germany; a company founded by Gustav Heyde in 1872 and known for their mechanical optical measuring devices.  Gustav Heyde went into receivership in 1932 and was superseded by the \u003cem\u003eFeinmess\u003c\/em\u003e company, which is still in existence today.\u003c\/p\u003e\n\u003cp\u003eThis is one of several known variants of the Aktino-Photometer: \u003cem\u003eHeyde’s Aktino Photometer Modell II\u003c\/em\u003e \u003cem\u003eBlende 8-Version \u003c\/em\u003eand dates to the early 1900s and probably WW1!\u003c\/p\u003e\n\u003cp\u003eLabelled \u003cem\u003eHeyde’s Aktino- Photometer D.R.G.M\u003c\/em\u003e: \u003cstrong\u003eD\u003c\/strong\u003eeutsches \u003cstrong\u003eR\u003c\/strong\u003eeich \u003cstrong\u003eG\u003c\/strong\u003eebrauchs \u003cstrong\u003eM\u003c\/strong\u003euster (pre-WW2 Germany) Registered Design. A form of early German copyright.\u003c\/p\u003e","brand":"Heyde","offers":[{"title":"Default Title","offer_id":55771794407799,"sku":null,"price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/products\/Antique_Heyde_s_Aktino_Photometer_Exposure_Meter.jpg?v=1757764844","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/antique-heydes-aktino-photometer-exposure-meter","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}