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Non-Commercial Use
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Category
Electricity Supply
3
Object type
ammeter
1
ampere-hour meter
1
galvanometers
1
Material
steel screws
3
glass
2
brass
1
copper alloy
1
mahogany box
1
non-magnetic metal wire
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oakwood box
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painted gauge
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painted, non magnetic, white metal casing
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painted, non-magnetic metal
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Chamberlain and Hookham DC ampere-hour meter
ammeter, prototype - 1884 15-40amps
reflecting galvanometer - 1904
1904
