The specific gravity is most conveniently estimated by means of the urinometer—Squibb's is preferable (Fig. 14).
One frequently wishes to ascertain the specific gravity of quantities of fluid too small to float an urinometer.
urinometer u·ri·nom·e·ter (yur'ə-nŏm'ĭ-tər)
A hydrometer for measuring the specific gravity of urine.