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 30
it by rubbingit against a fine file ora piece of fine emerycloth or sandpaperthat has been fastenedto a flat stick. Do thisfrequently so as tokeep a sharp pointthroughout each exer-cise. The lead for thecompasses should besharpened in the samemanner as the pencilexcept that its edgeshould be… … Fig. 31 19. Inking.—For drawing ink lines other than arcs ofcircles, the ruling pen (or right-line pen, as it is sometimescalled) is used. It should be held as nearly perpendicularto the board as possible, with the hand in the positionjhown in Figs. 31 and 32, bearing lightly against the T squareor…
