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Title: Sandhurst protractor, boxwood, with contour equivalents, sha [Go to resource]
Description: Sandhurst protractor, boxwood, with contour equivalents, shading equivalents, horizontal equivalents, length scales, degree protractor and sighting line thread/plummet clinometer License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: protractor Source: Science Museum Creator: Army & Navy C.S.L. (maker) Identifier: 1995-1872 Go to resource More Like this...
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