Accession Number: 2011.ph.514
Instrument Name: Unknown
Rotating circular glass lens enclosed within a metal inner frame which is further enclosed in wooden frame. Protruding from the inner metal frame is a metal and wooden crank. In the middle of the lens are two yellow-green glass pieces, one of which rotates with the turning of the crank.
Primary Materials: metal, wood, glass
Dimensions (cm): 2x10x22 cm
Good, some wear and scratches throughout. Glass is cracked and chipped and adhesive is visible around the edges of the one side. Reverse of metal frame is missing one screw. Some rust on connecting component of wood and crank shaft. Wood is split in area between crank and metal frame.
Date of Manufacture: Unknown
University of Toronto Department of Physics.
Donated to UTSIC: Yes