Record bridge Ohm meter

Made:
1940-1950 in Greater Manchester
maker:
Record Electrical Co.
Record bridge Ohm meter..Photographed 3/4 view on a white background.

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Record bridge Ohm meter..Photographed 3/4 view on a white background.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Record bridge Ohm meter.

Wooden box with broken carrying handle to top, crank handle to side, moving coil galvanometer to face.

Part of the Bob Gray collection of electrical objects.

An ohmmeter measures electrical resistance. Electrical resistance is the opposition to the flow of electricity known as the electric current. The unit of measurement for resistance is ohms and is represented by the letter omega, the final letter of the Greek alphabet. This would have been a useful piece of equipment for an electrical contractor.

Details

Category:
Electricity Supply
Object Number:
Y2012.15.57
Materials:
glass, metal (unknown) and wood (unidentified)
Measurements:
155 mm x 205 mm, 295 mm, 5.9 kg
type:
electric meter
credit:
Mr Robert Gray