Accession No

2301

Brief Description

excise rule, by Laban Cook, English, 1830 (c)

Origin

England; London; Soho; Crown Court

Maker

Cook, Laban

Class

calculating

Earliest Date

1830

Latest Date

1830

Inscription Date

Material

wood (boxwood); metal (brass)

Dimensions

length 310mm; breadth 30mm; thickness 20mm

Special Collection

Provenance

Purchased from D.H. & R.A. Morgan, Norfolk, England, 4/1977.

Inscription

‘COOK MAKE TO THE EXCISE Late WELLINGTON CROWN COURT SOHO London No 3330’ (under one slide)

Description Notes

Boxwood slide rule with inlet brass gauging points
Face A: upper stock has single radius log scale marked ‘A’ divided 1 -10 numbered 1, 1[.1] ... 2, [2.]5, 3 ... 10. Inlet gauging points marked ‘B’ and ‘G’. Slide carries identical scale marked ‘B’ and gauging point marked ‘G’. Lower part of stock has inverted single radius log scale divided [2.25] - [22] numbered [2.]5, 3 ... 10, 11 ... 2[0].
Reverse of slide carries information on gauge points, divisors and factors for circles and for volumetric measures.

Face B: Single radius log scale begins on upper part of stock and continues on lower, divided 1 -10 numbered 1, 1[.1] ... 3.2, 3.5, 4 ... 10. Gauge points let in for ‘G’, ‘MS’ and ‘MR’. Slide has single radius log scale marked ‘C’ and divided as those on face A.

Edge A: Double radius log scale beginnong on upper part of stock and continuing on lower marked ‘Segt St’ and’SS’ divided [.8] - 100numbered 1, [1.]5, 2 ... 5, 6 ... 10, 15 ... 100. Slide carries single radius log scale marked ‘B’ and identical to those on the faces except that it only runs to 9.5

Edge B: Double radius log scale begins on upper part of stock and continues on lower marked ‘Segt Ly’ and ‘SL’ divided [0.3] - 100 numbered [0.]5, 1 ... 5, 6 ... 10, 15 ... 100. Slide carries single radius log scale marked ‘C’ identical to that on oppoite edge. Under-side of slide carries 3 scales: scale of inches divided [0] - 12] numbered by 1 subdivided to 0.1, Second scale marked ‘Sphd’ divided [0] - [7.5] numbered by 1 subdivided to 0.1. Third scale marked ‘2d Variety’ divided [0] - [6.5] numbered by 1 subdivided to 0.1.

Complete

References

Events