Artifact Details

Title

Proportional compass

Catalog Number

B251.82

Type

Physical object

Manufacturer

Troughton

Place Manufactured

London, England

Dimensions

overall: 1/4 in x 6 1/4 in x 1/2 in

Description

Proportional compass, brass with steel major and minor points (at the ends). This example has only the "lines" and "circles" scales and the second "leg" (usually containing the scales of "planes" and "solids") is blank. Dimensions are of closed instrument.

Category

Pre-computer/other

Lot Number

B251.82