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Title: Otis King pocket calculator (a spiral logarithmic slide rul [Go to resource]
Description: Otis King pocket calculator (a spiral logarithmic slide rule), Model K, c1925. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: spiral slide rule Temporal: 1920-1925 Source: Science Museum Creator: Carbic Limited Identifier: 1997-135 Go to resource More Like this...
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