Accession No

3001

Brief Description

two rectangular protractors, 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

3001.2 length 154mm; width 45m; 3001.1 length 153mm; width 44mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘J.H.STEWARD LONDON’ (obverse of each)

Description Notes

2 identical rectangular boxwood protractors with bevelled edges. Degree scale around three edges, divided [1] - [179] in both directions, numbered by 10˚, subdivided to 1˚. Fourth edge has centimetre scale divided 0 - 14, numbered by 1, subdivided to 0.1. Centre occupied by four map scales - 1:1000, 1:1250, 1:1500 and 1:2000. Also a scale of chords, marked ‘CHO’, divided [0] - 90, numbered by 10, subdivided to 1.
Reverse has five more map scales for 1:500, 1:600, 1:700, 1:800 and 1:900. Also a second scale of chords, marked ‘C’ and otherwise identical to that on obverse. Lower part of reverse has scales for centimetres and 2 centimetres with transversal scales at ends for division to hundredths.

Condition good; complete.

References

Events