Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc (1919)
Fairfield, Howard Parker, 1858-, Kenison, Ervin, Waite, Edward B. (Edward Broughton), 1873-, American Technical Society · Chicago, American technical society · leaf 192
12 MECHANICAL DRAWING 47 In order that the size of an angle or arc may be stated with-out saying that it is a certain fraction of a circumference, the cir-cumference is divided into 360equal parts called degrees, Fig.67. Thus, it may be said thata certain angle contains 45 de-grees, i.e., it is 3Vo… … SOLIDS A solid has three dimensions—length, breadth, and thickness.The most common forms of solids are polyhedrons, cylinders, cones,and s-pheres. POLYHEDRONS A polyhedron is a solid bounded by planes. The bounding plane-Sare called faces and their intersections are called edges. The inter-sections…
Mechanical drawing · Blueprinting
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