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Title: Circular slide rule (two cardboard discs with radial transpa [Go to resource]
Description: Circular slide rule (two cardboard discs with radial transparent plastic cursor) by General Industrial Co.1788 Montrose, Chicago 13,Illinois, also marked Slide Chart Corp., 1959, Perrygraf, Marywood, Illinois License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: circular slide rule Temporal: 1959-1960 Source: Science Museum Creator: Perrygraf Corporation Identifier: 2001-12 Go to resource More Like this...
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