Elementary mechanical drawing, for school and shop (1886)
Aborn, Frank, 1845- [from old catalog] · Cincinnati, New York, Van Antwerp, Bragg & co · leaf 16
ne of the earths surface. Curved Lines are either regular or irregular. A curve is Regular when its curvature followsan established law. A curve is Irregular when its curvature is notgoverned by any known rule or law. CHAPTER I.—Straight Lines.Section I.—Horizontal Lines. All level lines, i.…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
