Accession No

2256

Brief Description

Marquois scales by Watkins and Hill, c.1825

Origin

Charing Cross; London; England

Maker

Watkins and Hill

Class

drawing; military

Earliest Date

1825

Latest Date

1825

Inscription Date

Material

ivory; wood

Dimensions

box length 327mm; breadth 95mm; height 29mm

Special Collection

Provenance

Purchased from Turner and Devereux, London, 07/1976. Purchased with assistance a Grant-in-Aid administered through the Science Museum (PRISM).

Inscription

‘WATKINS & HILL CHARING CROSS LONDON *’ (all three objects)

Description Notes

Right angle triangle: hypotenuse 3 times the length of the base; side at right angles to the base bevelled; index mark in centre of hypotenuse.
Two scales: divided on both sides with two scales on each edge - inner (natural) scale and outer (artificial) scale. Thus eight pairs of scales giving 20, 25, 30, 35, 40, 45, 50, 60 divisions to the inch, this figures engraved below each pair of scales. Natural scales all divided to 10 with 1 - 0 divided to 1. Artificial scales numbered by 10, divided to 1 from central 0 at 3 times natural scale. Fitted wooden box with sliding lid.

Condition

good condition

References

Events