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WW1 Gambrell Brothers Onwood's Patent Wood Moving Coil Galvanometer Serial No.247

WW1 Gambrell Brothers Onwood's Patent Wood Moving Coil Galvanometer Serial No.247

Gambrell Brothers

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WW1 Gambrell Brothers Onwood's Patent Wood Moving Coil Galvanometer Serial No.247

If you collect vintage technology, then this very nice, genuine, WW1 Gambrell Brothers Onwood's Patent Wood Moving Coil Galvanometer Serial No.247 is just for you! 

In very good cosmetic condition with a few surface scuffs and scratches in the wood. It has not been tested and is being sold as a display item only.

Marked:-

RES 14 ohms at 20˚C, no.247

Gambrell Bros Ltd London

Onwood's patent (1916): the patent was filed for an electrical measuring instrument- see appended schematic.

Approximate Meter Size:
  • Height (including connectors):  15.5cm
  • Depth: 9.7 cm
  • Width: 12.8cm

    A lovely addition to a vintage technology collection!

    Click on the following link for more vintage testing equipment.

    The Gambrell brothers are best known for manufacturing scientific equipment from 1894 prior to introducing radios, including crystal sets, from 1922 and the "Baby Grand", (first British AC receiver), in 1926. 

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