Accession No

0917

Brief Description

graphometer, Macquart, 1730 (c)

Origin

Paris; France

Maker

Macquart

Class

surveying

Earliest Date

1730

Latest Date

Inscription Date

Material

metal (brass)

Dimensions

length 241mm; breadth 115mm; height 85mm

Special Collection

Robert Whipple collection

Provenance

Purchased by Robert Stewart Whipple in 1948.

Inscription

‘Macquart AParis’ (on diameter)

Description Notes

Brass. Pierced semi-circle graduated 0-180˚ clockwise and anticlockwise. Read by diagonal scale. Slit and window sights at opposite ends of the diameter. Rotating alidade with slit and window sights. Compass mounted centrally within the semicircle. 8 point brass rose. Graduated 0 - 180 - 0˚ in single degrees. Ball below centre of the diameter fits into socket and shaft for attachment to tripod.
Engraved with foliage decoration.

References

Events