Accession No

2203

Brief Description

optical square for telemeter, by J. H. Steward, English, 1920 (c)

Origin

England; London; 406 Strand

Maker

J. H. Steward

Class

surveying

Earliest Date

1920

Latest Date

1920

Inscription Date

Material

metal (alloy); glass

Dimensions

height 61mm; maximum diameter 40mm

Special Collection

Provenance

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

Inscription

‘J H STEWARD
406 STRAND LONDON
No 38
OPTICAL SQUARE FOR STEWARDS TELEMETER’

Description Notes

Metal alloy body; black finish. Pinhole sight. Two mirrors at 45˚ within the body. Rectangular window through cylinder thumb and finger plates.

References

Events