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Description: | One of two. A manual, handheld calculator, able to divide and multiply. Consists of a plastic "cursor", 2 cylinders with spiral logarithmic scales and metal "holder". In original box with manufacturers sticker reading "Otis King's Calculator, Model "K" No. N1900". There are two pointers on the cursor, the first points to the multiplicand, the second had the scale rotated until pointing to the number one, then the cursor is moved to the multiplier. The bottom pointer, points to the answer. A similar reverse action is followed to divide. Older than 880a; scale no. 423; patent no. 183723 | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1949-1950 | Source: | University of Aberdeen | Creator: | Otis King, Carbic Limited | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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