Accession No

3017

Brief Description

Whitworth protractor, by J. H. Steward, English, 1/2 20th Century

Origin

England; London

Maker

J. H. Steward

Class

calculating

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

wood (boxwood)

Dimensions

length 153mm; width 57mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘WHITWORTH PROTRACTOR.’ (obverse)
‘J.H. STEWARD LONDON.’ (obverse)

Description Notes

Rectangular boxwood protractor.
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 miles to yards.

Condition good; complete

References

Events