Fry, Horace Pugh. [from old catalog] · Philadelphia · leaf 27
givensurface as a guide to the artisan. FITTING SYMBOLS. Parts that fit together, as a wheel on a shaft and a shaft in a bearing, must have an allowance madefor tight or loose fitting of the parts. Conventional Fitting Sym-bols and their uses are shown in Fig. 11. FfrrrmSYMBOL^ XX ^^^^^Z^Jf:^ EASY… … SECTIONS. 1. As the object of a drawing is to representthe exact construction of the machine or part drawn, it is oftenconvenient for clearness to draw some of the views or parts ofthem as sections through the object. Thus, in Fig. 17, the upperhalf of the right-hand view represents a secvion on a…
Mechanical drawing
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