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 294
easuringpoints / and r are used exclusively to obtain equivalentdimensions on the lines SL and S R, and that all dimensionsare first laid off on ►SZ. and S R before they are carried tosome other line. Also, when the dimensions are to the right,that is, on the line SR, the measuring point used is r,…
