Mechanical drawing; a treatise on the drawing of mechanical and machine details (1920)
Jones, Franklin Day, 1879-1967 · New York, The Industrial press; [etc., etc.] · leaf 42
e fine lines. The T-squareor triangle which is used to guide the ruling pen in drawingstraight lines is represented by d. It will be observed thatthe ruling pen is guided only by the top edge or corner of dand that there is a space e between the point of the pen andthe lower corner of d. This space… … Fig. 2. Method of using Ruling Pen produce a straight line and also to prevent either of the pointsof the pen from leaving the paper. The ruling pen is filled with ink by inserting the quill of theink bottle stopper between the pen points. Care must betaken not to put too much ink into the pen, and…
Mechanical drawing
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