Accession No

0890

Brief Description

graphometer, by Canivet, French, 1770 (c)

Origin

France; Paris

Maker

Canivet

Class

surveying

Earliest Date

1770

Latest Date

1700

Inscription Date

Material

metal (brass)

Dimensions

length 296mm; breadth 152mm; height 130mm

Special Collection

Robert Whipple collection

Provenance

Purchased by Robert Stewart Whipple in 06/1939.

Inscription

‘Canivet a la Sphere AParis’ (on semi-circle)

Description Notes

Brass. Pierced semi-circle graduated 0-180˚ clockwise and anticlockwise to 1˚. Fixed slit and window sights at opposite ends of diameter. Alidade with slit and window sights and vernier plate on each arm reading scale to 5’. Compass mounted within semi-circle. Brass 8 point rose graduated 0-360˚ in single degrees.
Engraved with foliage motifs.
Ball and socket joint for attachment to tripod with thumb screw clamp.

References

Events