Unknown

Physics · Unidentified

Accession Number: 2009.ph.181

Instrument Name: Unknown

Description:

A thick metal cylinder casing houses a single large ball bearing (approximately 8 cm across). There are three rotating devices affixed to the outside at right angles to the ball bearing; rotating one of these produces motion in the other. At the opposite end a single thin axle protrudes that turns with certain motions of the ball. Around the base, the cylinder is engraved “E.B.L. 524 05.3528.A”. There is a logo consisting of ’92′ and ‘D’ separated by a vertical line, all capped by a downward concave horizontal line. Also engraved on the ring that encircles the bottom-most rotating device is the inscription “CA1 9/16 B”, as well as “RAM”. A third inscription is obscured by a mounting bracket.

Alternative Name:

Primary Materials: Metal, Plastic, Glass

Markings:

Around the base, the cylinder is engraved “E.B.L. 524 05.3528.A”. There is a logo consisting of ’92′ and ‘D’ separated by a vertical line, all capped by a downward concave horizontal line.

Dimensions (cm):

Length = 15 cm, Width = 10 cm, Height = 10 cm

Function: Unknown

Condition:

Associated Instruments:

Manufacturer:

Date of Manufacture: 20th Century(?)

Provenance:

University of Toronto Department of Physics – Dr. Martin Lee’s Collection

Donated to UTSIC: Yes

Historical Notes: Dr. Martin Lee’s Collection