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Date: |
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Description: | "McFarlane's Calculating Cylinder" (c. 1833), consisting of a cylinder with three separate revolving parts, on which are inserted several series of numbers, calculated to propose and answer questions to an almost indefinite extent in the first four rules of arithmetic | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | ready reckoner | Temporal: | 1833 | Source: | Science Museum | Identifier: | 1993-1256 | Go to resource |
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