Hydrometer and alcoholmeter. Long, cylindrical clear glass tube; around two thirds of the tube is slender and contains graduated scale markings printed on paper affixed to the inside of the tube; the other third widens out and is capped with a spherical portion with a pointed end; this portion of the hyrdometer is red; stored in a thin rectangul...
Created:
1910 - 1940?
Contributed By:
University of Minnesota Libraries, Owen H. Wangensteen Historical Library of Biology and Medicine.