A steel cylinder is capped at either end by two conical steel caps. One end has an additional steel cap affixed with a curved metal strip. The other end (the “top”) has a long spindle emerging from the centre, with a metal tray on the end. The entire set is in a wooden box. The box is filled with wool as a packing material.
Accession Number: 2009.ph.153
Alternative Name: Nicholson Hydrometer
Primary Materials: stainless steel, wood
Old inventory number = “phy401”. The wooden box is labeled on the top “Nicholson Hydrometer”, “University of Toronto Department of Physics”. On the side of the box is labeled “Physical Laboratory, Nicholson Hydrometer, 1928”. Also on the top is a label reading “-ith Care” that is covered partially by the other label. Also reads “-Lennan” and “-nur Ave.” On the side of the box is written in pink pencil is “steel balls”. On the top is written something else in pink pencil that is obscured by the other label.
Instrument: Length = 20.5, Diameter = 3; Box length: 22.5, width = 7.5, height = 7
Measuring specific gravity of a liquid relative to water.
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Date of Manufacture: 1920s
University of Toronto, Physics Department
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