Accession No

0997

Brief Description

alidade, 1700-1800 (c)

Origin

Maker

Class

surveying

Earliest Date

1700

Latest Date

1800

Inscription Date

Material

metal (brass)

Dimensions

length 196mm; breadth 30mm; height 51mm

Special Collection

Robert Whipple collection

Provenance

Inscription

Description Notes

Brass. Two hinged limbs form right angle with two slit sights on each limb. Both limbs graduated along outer edge 0-90 by 10 to 1. Inner edges graduated 0-70 by 5 to 1.
(?)Pinhole sight along one edge.

References

Events