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Current meter by Massey, c. 1870

1870

Revy current meter with box, by Elliott Bros. London, England, c. 1875.

Revy's Water Current Meter, with box, 1873-1876

1875

Current meter, by Stoppani, Berne

Current meter, by Stoppani, Berne

Current meter with box designed by W G Price in 1885, made by W & L E Gurley, Troy, New York, USA, 1911-1913.

Current meter with box designed by W G Price

1911-1913