Metal-plate work : its patterns and their geometry, also, notes on metals, and rules in mensuration for the use of tin, iron, and zinc plate workers, coppersmiths, boiler-makers, and others (1887)
Millis, C. T. (Charles Thomas) · London ; New York : E. & F.N. Spon · leaf 48
is the same thing, at right angles to A O, and make C D equal to half the diameter of the smaller end. Join B D, and produce it, meeting A 0 in 0. Then 0 A is the height of the cone of which the tapering body is a portion, and 0 B the slant. PKOBLEM VI. To draw the pattern for a frustum of a cone,… … perpendiculars, say B A, make A B equal to half the longer diameter (radius), and on the other make A C equal to the given upright height. Draw a line 0 D perpendicular to A 0 and make C D equal to half the shorter diameter. Join B D, and produce it, meeting A 0 produced in 0. With A
Plating · Metallurgy
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
