Menu Close



A regular wooden box which rests on two long runners; these have screw holes in to allow the instrument to be fixed in place. At one end of the box is a large board with a vertical slot in the centre that opens into the box; this appears to have been roughly enlarged at some point. Affixed along the bottom of the board in front of the slot there is a horizontal slot about 3mm wide.

The other end of the box has a smaller, horizontally oriented slot with a metal gate that can be slid from side to side to make the slot thinner or thicker. The gate has engraved markings denoting the thickness of the slot, but without any units.

On the interior side of this gate the opening is circular and there is a small hole nearby on the side of the box. The inside of the lid nearest the larger open vertical slot has a ridged surface. Also at this end of the box, there is a piece of wood affixed at a slope to the base. The lid of the box is hinted on one side and can be latched closed with two rotating latches. The whole interior of the box is painted matte black.

Accession Number:

Alternative Name:

Primary Materials: Wood, Metal: Copper Alloy


On the top of the box, on an inlaid label: “PENROSE & CO. LONDON PARIS & SYDNEY”

There are some pencil markings on the base, with the word “Correct” written nearby.

Dimensions (cm):

Length = 43 cm, Height = 15 cm, Width = 25 cm


Possibly for the projection or examination of glass slides?


Good. The object’s surface has a few small markings and scratches from use. Some pieces appear to be missing. On the underside, the wood of one of the runners has split along the line of screws.

The aperture at one end of the projector seems to have been crudely altered or enlarged.

The screws attaching one of the hinges that allows the box’s lid to be opened have become detached and the hinge is detached.

Associated Instruments:


Penrose & Co., London, Paris, and Sydney

Date of Manufacture: 1893-1905


University of Toronto Department of Physics

Additional Information and References:

Historical Notes: