Lash-up electrical Circuit Breaker in wooden box w

Made:
c.1930
maker:
Telsen Electric Company Limited

Lash-up electrical Circuit Breaker in wooden box with glazed lid. System incorporates an electro-magnet (coiled wire around soft iron core) and two glass pots containing mercury to make the electrical connection and a Mica condenser marked PRO PAT 20287-30 British made Telsen Electric Ltd. Possible used with an electrically heated thermostatic water-bath. Date of Mica Condenser (from provisional patent) 1930. Approx date of Circuit breaker 1930

Details

Category:
Experimental Chemistry
Object Number:
1979-421
type:
circuit breaker
credit:
LGC; Laboratory of the Government Chemist
status:
Permanent collection

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