Sullivan, Christine [Gordon]. [from old catalog] · New York, Cincinnati [etc.] American book company · leaf 45
a horizontal plane. Theseplanes or surfaces are at right angles to each other, like the floorand the wall of a room. The floor is termed the Jiorizontal plane,and the wall the vertical plane. When the object is located, and itsvertical features projected on the vertical plane, we have the… … Fig. 6i. tions (scales, i to i, and ■^ to i). Note 2. — In blackboard drawings allow 3 inches toeach inch actual measurement. Exercise 3. — Draw a cylinder 6 feet high,diameter of basebeing 4 feet (Fig.62) ; also planand elevation(Fig. 63). ExerciseI. — Draw planand elevationof a square(Fig. 60).…
Mechanical drawing
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