Portable spark-gap type voltmeter Mk II type WY3208 SRE No.30, for measuring voltages from about 6 kV to 20 kV or more Portable spark-gap type voltmeter Mk II type WY3208 SRE No.30
Long scale moving coil electrical indicating instrument by Siemens Long scale moving coil electrical indicating instrument
Gramme ring electric motor, used at Rowntrees, York, to drive a fan.1/2H.P, 230 Volts D.C, and probably made in 1985. Has a long driving shaft, fits through bridge support for the two circular magnet coils. Gramme ring armmature beyond, with contacts at far end. fitted with carbon brushes. Grease lubrication by screwdown caps. Painted black. Manufacturer unknown gramme ring motor