Lot Essay
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.
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SCOTTISH, CIRCA 1835
Details
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
SCOTTISH, CIRCA 1835
the composed of three rotating sections with printed paper scales, cartouche signed McFARLANE'S CALCULATING CYLINDER. GLASGOW.
6in. (15cm.) long
Special notice
These lots have been imported from outside the EU for sale using a Temporary Import regime. Import VAT is payable (at 5%) on the Hammer price. VAT is also payable (at 20%) on the buyer’s Premium on a VAT inclusive basis. When a buyer of such a lot has registered an EU address but wishes to export the lot or complete the import into another EU country, he must advise Christie's immediately after the auction.