Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 53
ing ellipse in the scale of levels. Care should betaken to avoid sharp or blunt ends. 5. Ordinary defects in the form of the ellipse should be de-tected by examining it as follows: a. Turn the sheet to the right, to the left, and upsidedown, and view the form carefully when the sheet is ineach of… … FiQ. 42. Split Core Bos—Axis Vertical tances and make the necessary corrections. Likewise lo-cate C and D equidistant from 0 and compare the verticaldistances from these points to the ellipse. Make the nec-essary corrections as before. Concentric Circles in Perspective The problem of drawing two…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
