from
The Collaborative International Dictionary of English v.0.48
Hydrometric \Hy`dro*met"ric\, Hydrometrical \Hy`dro*met"ric*al\,
a. [Cf. F. hydrom[`e]trique.]
1. Of or pertaining to an hydrometer, or to the determination
of the specific gravity of fluids.
[1913 Webster]
2. Of or pertaining to measurement of the velocity,
discharge, etc., of running water.
[1913 Webster]
3. Made by means of an hydrometer; as, hydrometric
observations.
[1913 Webster]
{Hydrometric pendulum}, a species of hydrometer consisting of
a hollow ball of ivory or metal suspended by a treated
from the center of a graduated quadrant, and held in a
stream to measure the velocity of the water by the
inclination given to the thread; a kind of current gauge.
[1913 Webster]