Accession Number: 2009.ph.92
This is a circular, flat metal disk punched with small (5mm) circular holes.
Primary Materials: Metal: Iron Alloy
Dimensions (cm): Diameter = 11.5 cm, Width = .05 cm
Good: The surface of the metal is rusty in places. The metal is otherwise intact and with few scratches or marks.
Associated Instruments: 2009.ph.93, 2009.ph.94
Manufacturer: Locally made?
Date of Manufacture: 20th Century
University of Toronto Department of Physics