{"product_id":"antique-galvanometer-qty-1","title":"Antique galvanometer Qty 1","description":"\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003eA rare Gambrell Brothers mirror galvanometer (British), likely late 19th–early 20th century. A highly sensitive reflecting galvanometer used for detecting very small electrical currents, particularly in telegraphy and laboratory research. The light beam reflected from a small mirror amplified needle movement for precise readings. Mounted on an ebonised base with levelling screws. c.1890s–1910s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eW17 x D17 x H15 cm.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eReplacement value £700\u003c\/p\u003e","brand":"Gambrell Brothers","offers":[{"title":"Default Title","offer_id":53135096512851,"sku":"ANT-768","price":40.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/8674\/0307\/files\/antique_galvanometer_electrical_scientific_brass_Industrial_powerhouse_props_prop_rental_hire_vintage_movie_film_set_dec.jpg?v=1772279369","url":"https:\/\/powerhouseprops.co.uk\/products\/antique-galvanometer-qty-1","provider":"Powerhouse Props","version":"1.0","type":"link"}