MCFARLANE'S CALCULATING CYLINDER
Lot 239

MCFARLANE'S CALCULATING CYLINDER

SCOTTISH, CIRCA 1835

Fermé21 April 2016

Estimation

GBP 2,000–3,000

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MCFARLANE'S CALCULATING CYLINDER
SCOTTISH, CIRCA 1835
the composed of three rotating sections with printed paper scales, cartouche signed McFARLANE'S CALCULATING CYLINDER. GLASGOW.
6in. (15cm.) long

Note du spécialiste

This slide rule in the form of a cylinder would have been used to determine interest for fiscal calculations. Other examples are known in the collections of IBM and the Science Museum in London.