Shop sketching, a course of problems for mechanical drawing students (1919)
Windoes, Ralph Flagg, 1890- · Milwaukee, Wis., The Bruce publishing company · leaf 31
trimthe ellipse carefully. Figure 11 shows the protractor in use in thedrawing of a measuring cube. In this case the lefthand edge makes an angle of 30 degrees with thehorizontal, hence the right hand must be at 120degrees since the corner of the cube is a right angle.If the left hand edge had been… … „ Figuie 11 Plate 7 This plate involves the use of the perspectiveprotractor. It is largely a copy plate, but, as far as possible,each student should be assigned a different angle forthe perspective, Place the working drawing nearer the center asyour plate will not contain the instructions. The…
Mechanical drawing
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