Johnston, Philip Devereux, 1855- · New York, D. Williams Company · leaf 25
e of 3 = i foot. The beginner should acquire accuracy in drawing thelines, as well as in figuring the drawing. Certain maindimensions are always required to begin the drawing,but when it is completed and the dimensions are to beput in, these must be taken from the drawing with thescale. When there… … Fig. 9. draughtsman, as he is frequently called upon to makesketches from broken pieces of machinery, to be after-wards used as notes from which to make drawings.These sketches consist of outlines giving the form ofthe object in as many views as may be necessary toshow its form and bearing the…
Mechanical drawing
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![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-61-20.webp)
