Accession No

0094

Brief Description

brass theodolite, c. 1800

Origin

Maker

Class

surveying

Earliest Date

1800

Latest Date

1800

Inscription Date

Material

metal (brass); glass

Dimensions

length 305mm; breadth 172mm; height 242mm; compass diameter 153mm

Special Collection

Robert Whipple collection

Provenance

Purchased by Robert Stewart Whipple from T.H. Court on 23/02/1923.

Inscription

Description Notes

Brass theodolite. Telescope with lens cover (stuck on). Sliding objective focus. Bubble mounted over telescope. Supported by pillar at the objective end and by vertical arc. Arc graduated 80 - 0 - 30˚ subdivided to 30’. Read by vernier mounted on the telescope. Central compass with silvered scale 30˚ either side of N. Two bubbles with mutually perpendicular axes set in the compass face. Horizontal circle on an octagonal plate and graduated on a flat edge 0 - 360æ to 30’ of arc. Read by vernier plate to 1’ of arc. Central tapered pillar fits onto tripod head.

References

Events