A text book of geometrical drawing, for the use of mechanics and schools, in which the definitions and rules of geometry are familiarly explained (1849)
D ei^ A /u/. :j. T W ^^ F7Mte 43. PERSPECTIVE Fig.l. F - V ^ ^^^^^^^ ^^^::^^-^ ^^ ^Ap. / E ^-^^^^^ ^ .^-^^^X^ B /V^ G Az//. .^. D s 1) -,-- Ji, ■■i M \^- -■. r - -■^r- - A … 9 ; PLATE XLII. 85 gle at which they are viewed; the more the wheel is inclined theshorter will be the conjugate diameter of the ellipsis, until thewhole would form a straight Hne whose length would be equalto the diameter, and its breadth equal to the thickness of thewheel. This decrease of the…
