'Hydrometrograph' definitions:

Definition of 'Hydrometrograph'

From: GCIDE

Hydrometrograph \Hy`dro*met"ro*graph\, n. [Hydro-, 1 + Gr. ? measure + -graph.] An instrument for determining and recording the quantity of water discharged from a pipe, orifice, etc., in a given time. [1913 Webster]