ClipArt ETC
"We may compare currents by the quantities of a given electrolyte which they decompose in a given time. Faraday's voltameter is intended for this purpose. As compared with a galvanometer, the voltameter has the obvious disadvantage that it cannot measure a current at once, but only after the current has been flowing for some time." -Hazeltine, 1894

Faraday's Voltameter

"We may compare currents by the quantities of a given electrolyte which they decompose in a given time.…