Evershed's portable voltmeter/ammeter No.45979

Evershed's portable voltmeter/ammeter No.45979 with shunts for 1.5: 15: 150: 1200 amps in fitted box

Details

Category:
Electricity and Magnetism
Object Number:
1962-249
type:
voltmeter and ammeter
credit:
City and Guilds College