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 49
orse Twist Drill Co., and many others.As a step in the right direction, a decimal gauge lias recentlybeen adopted, in which the sizes are indicated by numbers whichreiJivsent the diameters in tiiousandths of an inch. JMost of these - 1.249 1.251 oranges had their origin in days when refined… … Fig. -to. avoiding all the troubles incident to the use of (ho arbitrarygauges. For the production of accurate plane surfaces the use of thestraight edge is not sufficient. Sucli surfaces should be comparedwith stiiudard surfaces called surface plates. Fig. 40. A suifaceplate is a cast-iron plate…
Mechanical engineering
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