Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 59
Pig. 74.larger holes, and especially in very hard woods, a 10-inch or12 nch sweep will be necessary. Wood-boring bits are made in many styles. The most import-ant are the auger bits, two styles of which are shown in Fig; 74. 44 PATTERN MAKING 37 JMicycaii hr, bouglit in sizes rnnuing by sixteenths…
Mechanical engineering -- Dictionaries
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
