Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 19
g. 2 reduced scale must be used to accommodate the size of paper,choose one which will show the object clearly, and which willnot require great crowding of dimensions. For mechanicaldrafting, the architects open divided scale, shown in Fig. 3, ismost used. There are many forms, both flat and… … one fourth inch on the drawing represents 1 inch on the object.In this case, the 3 inches is divided up into 12 parts, each ofwhich represents 1 inch. These parts are further divided torepresent quarter inches and other fractions. The double markCO following a figure means inch or inches; the…
Mechanical drawing
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