Foster, Edwin W · Boston : Ginn and Company · leaf 54
plete working drawing of this joint, with allthe necessary dimensions, is shown at h. In making drawings of this kind the greatest accuracyis required and special instruments are necessary. The drawing board on which the paper isfastened must be perfectly flat, with one ofits edges straight. Fig.… … 46 ELEMENTARY WOODWORKING needed for circles and arcs of circles. Each triangle con-tains one right angle, the one on the left being knownas a thirty-sixty triangle because the two remainingangles are thirty degrees and sixty degrees respectively.The one on the right is called a forty-five-degree…
Woodwork · Trees
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