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Title: Analogue calculator for problems in spherical geometry, bras [Go to resource]
Description: Analogue calculator for problems in spherical geometry, brass, mid-19th century, lacking one screw and spirit in one of two levels License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: calculator (geometry) Temporal: 1840-1860 Source: Science Museum Identifier: 1990-628 Go to resource More Like this...
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