Accession No

0021

Brief Description

prismatic compass by Troughton and Simms, c. 1850.

Origin

London; England

Maker

Troughton and Simms.

Class

surveying; magnetism

Earliest Date

1850

Latest Date

1850

Inscription Date

Material

metal (brass, oxidized brass); glass; paper; rope (string)

Dimensions

length 104mm; breadth 76mm; height 83mm

Special Collection

Robert Whipple collection

Provenance

Purchased by Robert Stewart Whipple in Folkestone in 03/1922.

Inscription

‘E. P. Gambier
Bengal Engineers ‘ (on lid)
‘Troughton & Simms.
London.’ (on compass card)

Description Notes

Brass compass box prismatic with lid, green card on needle divided [0] - 360 numbered by 10 subdivided to 30’, folding window fore-sight with string. Locking spring for card below sight. Locking clamps for when compass not in use. Prism hinged to opposite side form fore-sight. Mounted in sliding plate for focusing. Ray shade green and red coloured filters.

Condition fair; complete

References

Events