Spherometer

Physics

Accession Number: 2011.ph.518

Instrument Name: Spherometer

Description:

Spherometer consists of a black-painted metal measuring disc and a ruler mounter on a tripod black-painted metal base. Measurements on ruler are metric, measurements on disc are imperial.

Alternative Name:

Primary Materials: metal, painted metal

Markings:

“W.G. PYE & Co. LTD ENGLAND CAMBRIDGE” is embossed on disc. “858 E” is written in black marker on top.

Dimensions (cm): 6.5x5x5

Function:

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

Condition:

Very good condition. Some minor flaking of paint and corrosion on painted base.

Associated Instruments:

Manufacturer: W.G. Pye & Company Limited

Date of Manufacture: Early to Mid-Twentieth Century

Provenance:

University of Toronto Physics Department.

Donated to UTSIC: No

Historical Notes:

Object was received in a CENCO box with two additional spherometers (now numbered 2011.ph.513 and 2011.ph.517) and assorted other objects with uncertain relationships (now labelled 2011.ph.522).