A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 20
ghened surface by usingthe back of a bonehandled knife, or soapstone. Third.*size the glazed surface by spreading over it a thincoat of graphite, from a soft pencil. The paper is nowready to re-ink. CHAPTER III GEOMETRIC EXERCISES WITH INSTRUMENTS T^ XERCISE I.—Bisect a line of any length and… … Fig. 2 Exercise 2,—Erect a perpendicular to a given line(Problem i.) Fig. 2. Second method. Construction:From a given point E outside the given line AB draw aline at any angle to AB. Bisect and inscribe a circle 17 18 A PRACTICAL COURSE IN about CD. Where the circle cuts AB is a point of the±…
Mechanical drawing
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