A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 107
rrow an amountequal to the thickness ofthe desired line. Withthe same radius that wasused to describe the orig-inal circle, describe partof another circle, beingcareful not to run overthe first circle, and stop-ping when the two lines coincide. The directions for sha-ding a hole are precisely the… … Fig. 74 §13 GEOMETRICAL DRAWING 77 Vertical projections of cylinders are shaded as shownin the front elevation of Fig. 5, Drawing Plate, title:Projections—I. After studying the foregoing concerning shade lines, thestudent should be able tosee the reason for the usingor omitting of any shadelines on…
