Rogers' drawing and design; an educational treatise relating to linear drawing; machine design; working drawings; transmission methods; steam, electrical and metal working machines and parts; lathes; boiler and parts; instruments and their use; tables, etc (1913)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 146
Fia. 275. … ROGERS DRAWING AND DESIGN. 161 Any point, P, of the parabola is equally distantfrom the line DD and from the focus F, so thatFP is equal to PA. When the cutting plane intersects the base of thecone and is not parallel to any one of the lines onits surface, the curve produced in a section is calleda…
Mechanical drawing · Machine design
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
