The object consists of a metal aperture in the shape of a rectangular box. On each long side of the box is a brass clamp which may be tightened or loosened according to a scale marked on the bottom edge of the instrument. Two knobs on a short side of the box, each marked with a numerical scale, control these clamps. On the upper side of the box is a thick, rectangular metal plate supported by two metal rods affixed to the main box. In the centre of this same upper surface are two smaller adjustable dials.
Accession Number: 2013.psy.143
Primary Materials: Metal
Each dial is marked with a scale from 0 to 20 in increments of 5.
Dimensions (cm): Height= 19, Length= 22.5, Width= 15
Condition: Good; some tarnishing and scratches.
Date of Manufacture: Unknown
Additional Information and References:
- Donated to UTSIC