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Image

Has Image1
Non-Commercial Use1

Category

Electricity Supply1
Science Teaching1

Object type

wattmeters2
electrodynamometers1
electrodynamometers; wattmeters1

Maker

Ferranti Limited1
Ferranti Ltd.; Griffin & George Ltd.1
Griffin & George Limited1
Siemans Bros. and Co.1

Place of origin

Hollinwood1
Hollinwood, Oldham borough, Greater Manchester, England, United Kingdom1
London1
London, Greater London, England, United Kingdom1

Date

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Siemens electrodynamometer wattmeter (open instrument)

Joule meter by Ferranti, Hollinwood, England. Constructed for display by Griffin and George Ltd. 'Made in Great Britain'

Joule meter by Ferranti

1950-1960

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