The practical draughtsman's book of industrial design and machinist's and engineer's companion : forming a complete course of mechanical, engineering and architectural drawing (1866)
Armengaud, M. (Jacques Eugène), 1810-1891, Armengaud, M. (Charles), 1813-1893, Amouroux, M. (Jules), Johnson, William, 1823-1846 · Philadelphia : H.C. Baird · leaf 203
ur of an irksome kind. Attempts have been madeto avoid this by cutting the figure from the sheet of paper, andweighing it in a delicate balance against weights consisting ofparts of the same paper, of determinate sizes; but this method—atfirst sight simple and practical—is rendered of little use by… … BOOK OF INDUSTRIAL DESIGN. 193 Several planimeters, or instruments for mechanically mea-suring the area of plain surfaces, were exhibited in the GreatExhibition of 1851, and are noticed in Mr. Glaishers admirablereport on Class X., Philosophical Instruments, and pro-cesses depending upon their use.…
