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Current meter

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made in London

Current meter
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A current meter is a device used to measure the rate of flow in rivers and water supply pipes. This brass example was made around 1900, probably by the firm founded by Patrick Adie (1821-86), a scientific instrument maker based in London.

The meter has a two-bladed rotor, a counter and a bladed vane. The rotor, driven by the current, moves a worm gear, which turns the toothed edges of the two dials, one within the other.

Patrick Adie was particularly noted for his meteorological instruments. At least two large tide gauges can be credited to his firm: one was sent to India, the other installed at Chelsea Bridge in London.

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