Accession No

0395

Brief Description

Brass level for surveying, by Troughton and Simms, English, 1846.

Origin

Maker

Troughton & Simms

Class

surveying

Earliest Date

1846

Latest Date

1846

Inscription Date

1846

Material

metal (brass); glass

Dimensions

length 430mm; breadth 140mm; height 225mm

Special Collection

Robert Whipple collection

Provenance

Purchased by Robert Stewart Whipple from R. Middlegate, Paris, in 1927.

Inscription

on telescope
Troughton & Simms London
on the support
James G Lynde 1846

Description Notes

Brass level for surveying by Troughton and Simms, 1846. Brass throughout. 2 parts. Part One is the telescope with a rack and pinnion focussing moving eyepiece. Bubble mounted over telescope. Graduated in 1/10”. Hinged mirror over bubble. Transverse bubble over the objective. Ray shade. Part two Base screws into telescope support. 3 foot screws between parallel plates. Axis clamp. Azimuth motion tangent screw.

References

Events