Thermocouple ammeter
- Made:
- 1937
Thermocouple ammeter, Duddell's patent (No 17642 of 1900), made by Cambridge Instrument Co. Serial no.C17638, 0-10m. Dated 1937
Thermocouple ammeter, Duddell's patent (No 17642 of 1900), made by Cambridge Instrument Co. Serial no.C17638, 0-10m. Dated 1937