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Thermogalvanometer made by Latimer Clark, Muirhead and Company Limited, England, 1887.

Latimer Clark, Muirhead and Company Limited Latimer Clark, Muirhead and Company Limited

1887
Wright's demand meter

Wright's demand meter

1915
Thermogalvanometer made by W. T. Goolden & Co. Characteristic 'banjo' shape mounted on a long metal cylinder which houses a platinum silver wire suspended between a system of pulleys. The expansion of wire when heated is displayed by a pointer on a circular scale.

Cardew's Patent 'Banjo' Voltmeter

1900
Thermogalvanometer manufactured by Everett, Edgcumbe

Thermogalvanometer manufactured by Everett

1891
Electric meter (thermogalvanometer) made by Reason Manufacturing Company, Brighton (England) 1915.

Reason Manufacturing Company thermogalvanometer

1915
thermogalvanometer

thermogalvanometer

thermogalvanometer. Hot wire ammeter no. 57194 0-2 amps Admiralty pattern. made by Johnson & Philips.

Johnson & Philips thermogalvanometer

1942
Electric meter (thermogalvanometer) made by Hartmann & Braun, Frankfurt (Germany) 1910.

Hartmann & Braun thermogalvanometer

1910
electric meter - thermogalvanometer

electric meter - thermogalvanometer

1890
thermogalvanometer manufacturer unknown

electric meter - thermogalvanometer

Electric meter (thermogalvanometer) made by Reason Manufacturing Company, Brighton (England) 1915.

Reason Manufacturing Company thermogalvanometer

1915
Thermogalvanometer made by Johnson & Philips, England, 1904.

Thermogalvanometer made by Johnson & Philips

1904
Thermogalvanometer made by Reason Manufacturing Company, Brighton (England) 1915.

Reason Manufacturing Company electric meter

1915