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 130
ng.2a/. O standard ^^^fl^^^^^^^^^^^^^^^W extra Hea^ 3 P/ug -3 y 3PJpeNut 3*3^ 5/deOi///ef~„ £/bo^^r -3 P/u^ … Fig. 262 114 ESSENTIALS OF DRAFTING The representations of Figs. 280 and 281 are often used whenmaking piping layouts. Standard Pipe. — Wrought pipe is known by its nominal insidediameter. In the United States the Briggs Standard is in generaluse. The nominal diameter differs from the actual…
Mechanical drawing
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