A manual of elementary geometrical drawing, involving three dimensions. Designed for use in high schools, academies, engineering schools, etc.: and for the self-instruction of inventors, artisans, etc. ... In five divisions .. (1868)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York : J. Wiley & son · leaf 90
that timber is but a limited physical plane, forminga portion of the indefinite immaterial plane, in which bh is found ;hence the point b is as good for finding the direction of the indefi-nite line of shadow, bd, as is d, on the timber BB, for finding thereal portion only of the line of shadow,… … 4 i. A- : > —? T— jvmAv\_.^ 1 I :—1_ f=a. ■«*. ■A 9tm K -1 ^^ K^ B A lo
Geometrical drawing · Mechanical drawing
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
