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super-precision current transformer

super-precision current transformer

portable voltmeter no.94282 - 1918, 0-600v.

portable voltmeter no.94282 - 1918, 0-600v.

reflecting galvanometer - 1904

reflecting galvanometer - 1904

1904
Crompton reflecting galvanometer no.447 - c.1890, with two spare coils

Crompton reflecting galvanometer no.447 - c.1890