Accession No
6189
Brief Description
two transparent green 360o protractors, used by Brian Harland, British, mid-20th Century
Origin
Great Britain
Maker
Class
mathematics; surveying
Earliest Date
1920
Latest Date
1980
Inscription Date
Material
plastic
Dimensions
protractor 1: circumference = 200mm protractor 2: circumference = 150mm
Special Collection
Brian Harland collection
Provenance
Donated on or before 10/07/2003.
Inscription
BRITISH MADE
Description Notes
Two transparent green 360o protractors used by Brian Harland, mid-twentieth century.
Both protractors have scales marked around edge, 0o through 360o, by the half degree. Scale is marked with two sets of numbers, one ascending from 0o to 360o clockwise, the other anti-clockwise.
References
Events
Description
A protractor is a device for measuring the angle between two points or two lines. It is a semi circle, with a scale marked around its circumference from 0 to 180 (degrees). It should be made out of a clear material, like clear plastic, so that the scale can accurately be held over the line whose angle is to be measured.
FM:46657
Images (Click to view full size):
