Accession No

2188

Brief Description

complete sketcher, by J. H. Steward, English, 1925 (c)

Origin

England; London; 406 Strand

Maker

J. H. Steward

Class

surveying; military

Earliest Date

1925

Latest Date

1925

Inscription Date

Material

wood (boxwood); metal (brass); paper (card)

Dimensions

length 141mm; breadth 76mm; height 28mm

Special Collection

Provenance

Transferred from Department of Geography, University of Cambridge, Cambridge, England, 05/1969.

Inscription

‘No 544
J.H. Steward
406 Strand
LONDON’
‘COL. W. VERNERS
COMPLETE SKETCHER’

Description Notes

Boxwood rectangle. Folding slit and window sights. Brass semi-circle with indicator arm reading scale of elevation and depression graduated on boxwood 60-0-60 to 1. Card compass ggraduated 0-360˚ to 5˚ with 16 point rose. Bevelled edges graduated: 3 sides 0-180 and 180-360˚ to 1˚ clockwise. Fourth side 0-24 clockwise and 0-13 anti-clockwise.
On reverse: scale of Yards at 1 inch to a mile; millimetres and centimetres; scale of Links, scale of degrees of slope; horizontal equivalent for scales of 2” to 1 mile and smaller scales; diagonal scale of inches. Formulae for calculating Horizontal equivalents, degrees of slope and vertical intevrae etc.

References

Events