Accession No

1016

Brief Description

semicircular protractor, English, 17th Century

Origin

England

Maker

Class

drawing

Earliest Date

1600

Latest Date

1700

Inscription Date

Material

metal (brass)

Dimensions

Diameter 128mm

Special Collection

Provenance

On loan from Trinity College, University of Cambridge from 1951.

Inscription

Description Notes

Protractor with straight edge and semicircular arc. Arc carries three scales.
Outermost is a degree scale divided clockwise [0] - 180˚, numbered by 10˚, subdivided to 5˚ and to 1˚.
Middle is a degree scale divided anticlockwise [0] - 180˚, numbered by 10˚, subdivided to 5˚ and to 1˚.
Innermost is an hour scale, divided 12 - 4 - 12, numbered by 1
Bevelled edge to diameter with central index.

Condition good; complete.

References

Events