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Spherometer with box (half of box). Spherometer consists of a metal measuring disc and a ruler mounter on a tripod base. Measurements on both are metric.

Accession Number:

Alternative Name:

Primary Materials: Metal, painted metal, cardboard.


Spherometer: “CENCO” written on disc. Box: “3360; K51; SPHEROMETER STUDENT FORM; –cient. Instr.; Central Scientific Company; SCIENTIFIC INSTRUMENTS CENCO LBORATORY SUPPLIES; CHICAGO”

Dimensions (cm): Spherometer: 7×5.5×5 Box: 8x8x8


Use dto determine the radius of curvature of concave and convex surfaces of mirrors and lenses.


Spherometer in excellent condition. Box has some tears and scratches inside and out.

Associated Instruments:

Manufacturer: Cenco

Date of Manufacture: Early to Mid-Twentieth Century


University of Toronto Physics Department.

Additional Information and References:

Historical Notes:

Object was received with two additional spherometers (now numbered and and assorted other objects with uncertain relationships (now labelled all together in the box.