What is "urinometer"

Urinometer \U`ri*nom"e*ter\, n. [Urine + -meter.] A small hydrometer for determining the specific gravity of urine.

n. A hydrometer used to measure the specific gravity of urine.

A Urinometer is a simple piece of equipment for determining urine specific gravity.

A typical urinometer is composed of a float, a weight, and a stem. The float is an air-filled glass tube, ending in the weight on the left and the stem on the right. The weight is a bulb filled with ball bearings embedded in a red solid, probably a glue of some sort. The glass stem extends to the right, and has calibrated graduations and numbers marked off to indicate specific gravity measurements.

It is placed in a tube of urine, and where the meniscus of the urine reaches displays the specific gravity of the urine.

A urinometer is typically used in medical diagnostic labs.