{"product_id":"1930s-white-bakelite-rototherm-wall-hanging-thermometer","title":"1930s White Bakelite Rototherm Wall Hanging Thermometer","description":"\u003ch1\u003e1930s White Bakelite Rototherm Wall Hanging Thermometer\u003c\/h1\u003e\n\u003cp\u003eThis 1930s White Bakelite Rototherm Wall Hanging Thermometer has a lovely face, with an easy to read dial showing the ‘freezing point’ temperature of 32 ºF, and measures from 30 to 100 ºF.\u003c\/p\u003e\n\u003cp\u003eIt has three white bakelite 'bun' feet which allows the thermometer to also sit neatly on a desk \/ work surface. One of the feet has a hole in the middle for wall hanging.\u003c\/p\u003e\n\u003cp\u003eThe bimetallic thermometer is in working order. The white bakelite has discoloured with age but has no chips, cracks or restoration: there are a few surface blemishes. The face, underneath the glass, is slightly pitted with age. There is no back on the base of the thermometer.\u003c\/p\u003e\n\u003cp\u003eMade by the British Rototherm Co. Ltd, London, England, British Patent Number 378314: patent dating to 1932.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApproximate Dimensions\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBase Diameter:- 11.6cm (~ 4.5\")\u003c\/li\u003e\n\u003cli\u003eHeight: 4cm\u003c\/li\u003e\n\u003cli\u003eDiameter of thermometer face: 6cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease click on the following link for more \u003ca href=\"https:\/\/mullard-antiques-and-collectibles.myshopify.com\/collections\/meterological-weather\" target=\"_blank\"\u003emeteorological and weather equipment.\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eBimetallic Thermometer\u003c\/h2\u003e\n\u003cp\u003eRototherm invented the bimetallic thermometer in 1934. The thermometer has a metal pointer that moves up and down a circular scale. The pointer is mounted on a coiled piece of metal called a bimetallic strip. The hotter the temperature, the more the bimetallic strip expands, and the more it pushes the pointer up the scale.\u003c\/p\u003e","brand":"Rototherm","offers":[{"title":"Default Title","offer_id":55340630180215,"sku":null,"price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0303\/5122\/8972\/files\/1930s_White_Bakelite_Rototherm_Wall_Hanging_Thermometer.jpg?v=1750594537","url":"https:\/\/mullardantiques.co.uk\/en-us\/products\/1930s-white-bakelite-rototherm-wall-hanging-thermometer","provider":"Mullard Antiques and Collectibles","version":"1.0","type":"link"}