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Image
Has Image
5
Non-Commercial Use
4
Category
Electricity Supply
3
Industrial Chemistry
1
Radio Communication
1
Maker
Marconi's Wireless Telegraphy Company Limited
1
Salt Union Ltd. (Winsford)
1
On Display
Science Museum
1
Information Age Gallery: Cable
1
Object type
ammeter - moving iron
1
dynamometers
1
inductor
1
meter
1
models
1
models; saltworks
1
saltworks
1
Place
Chelmsford
1
Chelmsford, Essex, England, United Kingdom
1
Winsford
1
Winsford, Cheshire, England, United Kingdom
1
Material
painted wood
5
glass
2
lacquered copper alloy
2
wood
2
black coated metal
1
coated electrical wiring
1
copper
1
copper alloy
1
cork
1
lead
1
Date
From
To
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High-frequency chokes, 1900-1950
1900-1950
Siemens dynamometer ammeter
Edison's electrolytic A-H. meter?
Open pan salt making, handed-square salt pan and stove, 1842-1924
1924
Siemens moving iron ammeter
