Photo from Bureau of Standards 

 THE MOST POWERFUL MACHINE IN THE WORLD 

 This great Olsen testing machine, located at the Pittsburgh laboratones of the B,,re^^^ 

 of Standards, is used for determining the crushmg (compressive) ^^^f gj\°^ "^^^"^^itmds 

 in testing great columns of steel or masonry It can ^xert a pressure of 10000,000 poimds 

 which is sufficient to break the steel shaft of . the greatest war ^f f ^^f^^^f , J,^. J 

 shows a 48-inch brick pier, 16 feet long, fitted mto the machme and about to be tested. 



167 



