A w:urinometer. Urinometers are used to measure the w:specific gravity of w:urine; one floats the device in a tube of urine and reads off the number at the meniscus.

Description

This 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) gradations and numbers marked off to indicate specific gravity measurements.

• Credit: Phyzome is Tim McCormack
• License: GFDL
• Location: Charlottesville, Virginia, USA
• Date: 2005-4-6

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