A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 14
lightly with the left hand,so as to keep them fromslipping, and draw the linewith the pen or pencil held in the right hand, and againstthe edge of the triangle. Fig. 5 shows the triangles andT square in position. 4. For drawing parallel lines that are neither verticalnor horizontal, the simplest… … GEOMETRICAL DRAWING § 13 \rith the left hand; then move the triangle A along theedge of B. The edge a b will be parallel to the line c d\and when the edge a b reaches the point g, through which itis desired to draw the parallel line, hold both triangles t
