{"product_id":"50ua-moving-coil-meter-with-0-to-6kv-scale-50-microamp-sensitive-sangamo-west","title":"50uA Moving Coil Meter with 0 to 6kV Scale 50 microamp sensitive Sangamo West","description":"This is one item of 50uA full scale deflection microammeter with a scale that reads 0 to 6kV. It was made by Sangamo West. This would normally be part of equipment where a suitable series resistor was used to take off a tap from a lower voltage part of an E.H.T. generating system, i.e. you will Not be able to read 6kV supplies with any 10 Watt 10 MegOhm series resistor, which would be a non-existant part. The needle zeroes correctly and I have tested it for accurate reading at 50uA. The coil resistance is shown as 934 Ohms. There is a chip on the side of the fascia.\u003cbr\u003e\u003cbr\u003eAs seen in the video, you could use a 9V battery and normal skin resistance to move the needle, and it will certainly read the current generated by potato batteries, very small solar cells, photodiodes and phototransistors etc.","brand":"Sangamo West","offers":[{"title":"Default Title","offer_id":58501261361536,"sku":null,"price":14.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/il_fullxfull.4497153797_44x2_2e44230d-e850-46aa-bc1f-cfd282009cf9.webp?v=1785180629","url":"https:\/\/shop.usefulcomponents.com\/products\/50ua-moving-coil-meter-with-0-to-6kv-scale-50-microamp-sensitive-sangamo-west","provider":"HJW Electronics","version":"1.0","type":"link"}