Notes on technical sketching and free hand lettering for engineering students (1912)
Smith, Alton Lincoln, 1867- [from old catalog] · Worcester, Mass., The author · leaf 93
te the arm so as to bring the pencil tolie along the line AB with its end on A. Be sure the pencil is perpendicular to the line of sight. Notenow, how the point B appears to divide the length from the end of the pencil to the thumb. Is it one-half, three-eighths or what? Having decided, compare the… … Fig. 40 91 226. To test the inclination of any line as AB. sit in the same position as when drawing the line.Place the board so its upper edge is horizontal and inchne it until its plane is perpendicular to the line ofsight. Take the pencil or a straight edge and lay it flat against the face of the…
Mechanical drawing · Lettering
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