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Gaging Tools and Methods: Measuring Instruments Used by Machinists and Toolmakers. E-book. Formato PDF
Franklin Day Jones
edizioni Forgotten Books collana , 2017
The standard bar thus marked was taken to Washington and com pared with the government standard Bronze No. 11 and also with Low Moor iron No. 57. In comparing these standards, a method was employed very similar to that used in marking. The bar, properly supported, Was placed upon a box that rested upon rolls and onthis...