Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 338
Figs. 48 to 51.—Graphical method of finding the diameters of shell blanks. section card be made to a scale of 3^ full size, its area will be J^ thefull area and if the section card be located on the stick by the samescale its moment-will be 3^ the full moment. If now the balancecard be made…
Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-166-66.webp)
