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Show USEFUL BRAKE .LINING TESTING DEVICE UH; if j;- v". !" f i - -r V : 4 : t ? " v "a . V X - , . - t i ' v, " - " - " , How the timed States Bureau of Standards tests the various brake linings used in different automobiles in order that the driver may have the best possible pos-sible service from his brakes. Photograph shows Carl H. Roeder with the brake lining testing machine which, allhough it does not attempt to duplicate running conditions, gives a steady run from which comparisons are gained. |