Fox, William Paul. [from old catalog] · Chicago, Ill., Fox brothers · leaf 78
FIG. 152 Illustration showing the use of Tee Square and Triangle in drawing vertical parallelsand parallels at 45° to vertical. — 74 — … FIG. 153Illustration showing the method of testing the 90° angle of a triangle. 7. To draw parallels at any angle omit the use of tee squareand use two triangles, making one the guide. 8. Lines are important in mechanical drawing. The kindsused are as follows (See Fig. 155): All these points are…
Woodwork · Mechanical drawing
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