拍品專文
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
細節
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
注意事項
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