Accession No

2125

Brief Description

station pointer by Troughton & Simms, mid 9th C

Origin

London; England

Maker

Troughton & Simms

Class

surveying

Earliest Date

1825

Latest Date

1875

Inscription Date

Material

metal (brass); wood

Dimensions

box length 423mm; breadth 190mm; height 55mm

Special Collection

Provenance

Transferred from Institute of Astronomy, University of Cambridge, Cambridge, England, 10/1975.

Inscription

‘Troughton & Simms LONDON’ (spokes)

Description Notes

Circle graduated 0 - 180 - 0, subdivided to 30´. 3 spokes. Screw pin through centre of pivot. 3 arms; 1 fixed, two with clamp and type B vernier reading scale to 1´. Flat arms with bevelled edges. Two can be brought to coincide; 3rd has to be 10˚ away.
Fitted wooden box.

Condition

References

Events