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Title: Set square, metal, by Thomas Jones, 60 degrees, in metal 3/1 [Go to resource]
Description: Set square, metal, by Thomas Jones, 60 degrees, in metal 3/16" thick, bevelled at base and hypotenuse, at bottom of perpendicular is a brass scale 1" long divided into tenths, J.D. Potter's card inside triangular wood case License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: set squares
squaring drawing instrumentsTemporal: 1806-1861 Source: Science Museum Creator: Jones, Thomas Identifier: 1911-241 Go to resource More Like this...
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