Accession No

2530

Brief Description

prismatic magnetic compass, by Negretti and Zambra, English, 1916 (c)

Origin

England; London

Maker

Negretti and Zambra

Class

surveying; magnetism

Earliest Date

1916

Latest Date

1916

Inscription Date

Material

metal (brass, steel and one other); glass; liquid

Dimensions

length 51mm; breadth 50mm; height 29mm

Special Collection

Provenance

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

Inscription

‘PATENTS 1818/15 10319/15 FURTHER PAT.
PENDING. NEGRETTI and ZAMBRA. LONDON’ (base)
‘Lt. T. H. DAYLE 7th BATTERY’ (scratched on lid)

Description Notes

Prismatic magnetic compass, by Negretti & Zambra, English, c. 1916.

Metal alloy; black finish. Hinged lid wither aperture. Liquid filled card compass graduated 0 - 360˚, divided to 1˚, with fleur-de-lys for North. Outer ring graduated 0 - 360˚, divided to 5˚. Hinged magnifying glass, with slit sight over. Brass band round side graduated 0 - 360˚, divided to 5˚, and with 16 cardinal points, subdivided to 4. Brass shackle.

Condition

References

Events