{"product_id":"weston-normal-cell-by-tinsley-co","title":"Weston Normal Cell By Tinsley \u0026 Co","description":"\u003ch1\u003eWeston Normal Cell By Tinsley \u0026amp; Co\u003c\/h1\u003e\n\u003cp\u003eThis is a portable Vintage Weston Normal Cell By Tinsley \u0026amp; Co, which would have been used as a laboratory standard for voltage. They typically stabilised at around 1.018638 Volts. No current was normally drawn from the cell.\u003c\/p\u003e\n\u003cp\u003eThis type of cell was made between 1924-1967 and are no longer in use. \u003cstrong\u003e\u003cspan style=\"color: #ff2a00;\"\u003eWe are selling this as a scientific curio\/display item only\u003c\/span\u003e\u003c\/strong\u003e but it is working with \u003cspan style=\"color: rgb(0, 0, 0);\"\u003ea measured output of 1.018 volts at 20ºC.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe cell consists of a beautiful wood case covering the brass top with 2 connections marked ‘+’ and ‘-’.  It is labelled:\u003c\/p\u003e\n\u003cdiv style=\"padding-left: 30px;\"\u003eWeston Normal Cell\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 30px;\"\u003e1.01824 Int Volts at 20˚C\u003c\/div\u003e\n\u003cdiv style=\"padding-left: 30px;\"\u003eH Tinsley \u0026amp; Co. London SE25 \u003c\/div\u003e\n\u003cdiv style=\"padding-left: 30px;\"\u003eNo. 29146\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eInvented by Edward Weston in 1893, it was adopted as the International Standard for EMF from 1911 until superseded by the Josephson voltage standard in 1990.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApproximate Dimensions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWidth 9.5 cm\u003c\/li\u003e\n\u003cli\u003eDepth: 9.5 cm\u003c\/li\u003e\n\u003cli\u003eHeight: 15.2cm \/ 6\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis beautiful scientific instrument is a must-have for collectors of \u003ca href=\"https:\/\/mullard-antiques-and-collectibles.myshopify.com\/collections\/tests-measures\" target=\"_blank\"\u003e\u003cstrong\u003evintage electronic\/physics\/science equipment\u003c\/strong\u003e\u003c\/a\u003e as a display item in an office, University, or man-cave.\u003c\/p\u003e\n\u003cp\u003eNB: The photos have been taken with and without flash, hence the differences in colour.\u003c\/p\u003e\n\u003ch2\u003eH. Tinsley \u0026amp; Co. Ltd\u003c\/h2\u003e\n\u003cp\u003eH. Tinsley \u0026amp; Co. Ltd were based in London, England. They were, and still are, manufacturers of Precision Standards and equipment for calibration and measurement. The company started with the manufacture of the first commercially manufactured Weston Standard cells in England in 1905. They are now known as Tinsley Precision Instruments and are based in Surrey, England.\u003c\/p\u003e","brand":"H Tinsley \u0026 Co","offers":[{"title":"Default Title","offer_id":45132912132353,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/files\/DSC08983_6e0d9885-dd23-4793-8945-3aaa5c69f177.jpg?v=1715618169","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/weston-normal-cell-by-tinsley-co","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}