rotameter

[ roh-tam-i-ter, roh-tuh-mee- ]

noun

1. an instrument for measuring the rate of flow of a liquid, consisting of a tapered vertical tube in which a small float is forced upward until its weight balances the fluid force.

Rotameter

/ ˈrəʊtəˌmiːtə /

noun

1. a device used for measuring the flow of a fluid. It consists of a small float supported in a tapering glass by the flow of the fluid, the height of the float indicating the rate of flow

Word History and Origins

Origin of rotameter¹

Partial translation of German Rotamesser (1911), equivalent to Rota ( tion ) rotation + Messer measurer, meter