Accession No

2319

Brief Description

12-inch beam compass, by Jesse Ramsden, c. 1760 - c. 1800

Origin

London; England

Maker

Ramsden. J.

Class

drawing

Earliest Date

1760

Latest Date

1800

Inscription Date

Material

metal (brass), wood

Dimensions

l 357mm w 10mm d 4mm

Special Collection

Provenance

Purchased from Harriet Wynter, 9/1976.

Inscription

‘Ramsden London’

Description Notes

12-inch beam compass, by Jesse Ramsden, c. 1760 - c. 1800

Brass beam divided -0.5 - 48.5 by 1 to 0.1 with vernier reading to 0.01 and -0.5 to 36.5 by 1 subdivided to 0.1 with vernier reading to 0.01. scale of 4 and 3 chains to the inch, vernier reading to one link. Brass adjustable zero index with fitting for protracting pin; sliding index with fitting for protracting pin; sliding index with clamp, slow motion screw, vernier, and fitting for protracting pin, pen, or pencil. 2 steel protracting pins with knurled brass heads and clamps. Brass pencil holder and pen (not original? [Dr. McConnell thinks it IS original...]). Fitted mahogany box with sliding lid.
good condition

References

Events