Fox, William Paul. [from old catalog] · Chicago, Ill., Fox brothers · leaf 73
ing. These angles give the triangle itsname, such as the 45° and the 30°-60° triangle. There areother triangles, but these two are universally used, some drafts-men possessing only these two. (d) The scale, which need only be a rule with the ordinarydivisions into eighths and sixteenths, is made in… … FIG. 147 Photograph of Drawing Board, Tee Square, 45° Triangle, 30°-60° Triangle, Thumb Tacks, and Triangular Scale. — 70 — (e) The compass, used for drawing circles, which comes inall qualities and prices. (f) The dividers, which are used for spacing equal distances. (g) The ruling pen, which is…
Woodwork · Mechanical drawing
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