Accession No

0041

Brief Description

marquois scale, c.1900

Origin

Maker

Class

drawing

Earliest Date

1900

Latest Date

1900

Inscription Date

Material

wood (boxwood and one other)

Dimensions

box length 337mm; breadth 130mm; thickness 23mm

Special Collection

Provenance

Inscription

Description Notes

Right angle triangle; hypotenuse three times length of base. Side of right angles to base bevelled. Index mark in centre of hypotenuse.
Two scales; divided on both sides with 2 scales on each edge: inner (natural) scale and outer (artificial) scale. Thus eight pairs of scales giving 25, 30, 35, 40, 50 and 60 divisions per inch. Number of divisions engraved below scale. Natural scale divided by 10 with single division at one end to 1; even numbers only engraved. Artificial scale divided by 10 to 1 from central zero, at 3 times natural scale.
Fitted wooden box with sliding lid.

References

Events