Accession No

3004

Brief Description

metric protractor, by J. H. Steward, English, 2/2 19th Century

Origin

England; London

Maker

J. H. Steward

Class

mathematics

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

wood (boxwood)

Dimensions

length 154mm; width 56mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘Whitworth Metric protractor. J. H. STEWARD LONDON.’ (obverse)

Description Notes

Rectangular boxwood protractor with bevelled edges.
Obverse: degree scale on three edges divided [0] - [180] and [180] - [360], numbered by 10˚, subdivided to 1˚. Fourth edge carries scale of inches divided [1] - 0 - 4, numbered by 1, first inch subdivided to 1/10. Centre is marked with scales for calculating distances (as marked on a map) travelled by infantry and cavalry, for various different scale maps.
Reverse: various map scales for different ratios. Also table for converting kilometres to miles.

Condition good; complete

References

Events