Accession No

3008

Brief Description

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

Origin

England; London

Maker

J. H. Steward

Class

mathematics

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

wood (boxwood)

Dimensions

length 157mm; width 55mm

Special Collection

Steward collection

Provenance

Collection purchased from member of the Steward family, 1974.

Inscription

‘LEMMON PROTRACTOR for 15pr B.L.C.
J.H. STEWARD 406 Strand. london.’ (REVERSE)

Description Notes

Boxwood rectangle with one bevelled edge.
Obverse: bevelled edge carries two map scales: one for 1/2 inch : mile, divided 500 - 0 - 7000 yards, numbered by 1000; the other for 1 inch : mile, divided [1000] - 0 - 5000 yards, numbered by 1000, first 1000 divided to 100. Remainder of side occupied with tables for correcting angle of gun.
Reverse: various tables and equations. Also equal scale divided 1˚ - 13˚, numbered by 1˚.

Complete.

References

Events