Geometrical drawing, projection drawing, freehand and ornamental drawing, wash work and brush drawing, elementary perspective drawing, architectural drawing (1921)
International Correspondence Schools · Scranton, PA : International Textbook Co. · leaf 34
Fig. 33 §1 GEOMETRICAL DRAWING 19 As an example, let it be required to draw a curved linethrough the points a, b,c,d,&ic., Fig. 34. As just stated, apart of the irregular curve must be used that will passthrough at least three points. With the curve set in the firstposition A, its edge is found… … FiG. 34 tinning it quite to d, there is less liability of there being anangle where the next section joins on. For the next sectionof the Hne, the curve should be adjusted so as to coincidewith a part of the section already drawn; that is, instead ofadjusting it to points d,ej, etc., it should be…