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 29
foot rule. This is very convenient for the machinist in makingmeasurements which are not required to he very accurate. For IS MACHINE SHOP WORIL 11 work of greater rufiiiemeiit, the standard steel scale (B^ig. 15) isuseil. Tliis is in realitj a divided or graduated straight edge and,as such, forms… … Fig. 14. eight inches in length, and carefully hardened and ground. Thegraduations in the better class of scales are cut with a dividingengine, although the lines may be etched on the surface with afair degree of accuracy. A thin and somewhat narrower form,called a flexible scale, is made in sizes…
Mechanical engineering
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