{"product_id":"volt-ratio-box-qty-1","title":"Volt ratio box Qty 1","description":"\u003cp\u003eCropico (Croydon Precision Instrument Co.) Volt Ratio Box, Type VR2, manufactured in England. A precision laboratory instrument used to provide accurate, selectable voltage division ratios for calibration and comparison work, typically in conjunction with a potentiometer or standard reference source. Marked with multipliers (×10 to ×400) corresponding to stepped voltage outputs from 15 V to 600 V. Used in metrology laboratories, calibration departments and research facilities, mid-20th century, circa 1950s–1970s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eW32 x D15 x H22 cm.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUntested.\u003c\/p\u003e","brand":"Cropico","offers":[{"title":"Default Title","offer_id":58303702270339,"sku":"VOL-746","price":90.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1023\/0612\/0067\/files\/Industrial_powerhouse_props_prop_rental_hire_vintage_movie_film_set_dec_volt_ratio_box_electrical_scientific.jpg?v=1782051889","url":"https:\/\/www.ukvintage.co.uk\/products\/volt-ratio-box-qty-1","provider":"UK Vintage","version":"1.0","type":"link"}