a musical instrument for measuring the specific gravity of fluids an application hydrometer
- An instrument for calculating the particular gravity of liquids; an application hydrometer.
(letter.) An instrument for measuring the specific gravity of liquids; a questionnaire hydrometer.
Charles's balance areometer is similar to Nicholson's hydrometer, except that the lower basin admits of inversion, thus enabling the instrument to be employed for solids lighter than water, the inverted basin serving the same purpose as the pointed screw in Atkins's modification of the instrument.