MACHINE epeated tests enable us to say that even from precisely the same steel the tubing produced by any other method falls short of ours in strength about 10000 Poiligis per Square 04 This emphasizes the excellent effect of our accuracy of our annealing process and the total absence of pickling during the operation. 'Pioneer' Fifty Point Balboa Steel Tube is safe insurance to the rider and means success to the manufac turer and dealer. It is essential to a really high grade wheel. 'PIONEERS' in Correct Composition. KEUFFEL & ESSER CO. 44 Ann Street NEW YORK. 22 GRIFFIN MILLSGRINDING PORTLAND
MACHINE epeated tests enable us to say that even from precisely the same steel the tubing produced by any other method falls short of ours in strength about 10000 Poiligis per Square 04 This emphasizes the excellent effect of our accuracy of our annealing process and the total absence of pickling during the operation. 'Pioneer' Fifty Point Balboa Steel Tube is safe insurance to the rider and means success to the manufac turer and dealer. It is essential to a really high grade wheel. 'PIONEERS' in Correct Composition. KEUFFEL & ESSER CO. 44 Ann Street NEW YORK. 22 GRIFFIN MILLSGRINDING PORTLAND CEMENT tlicln far superior to any other mill.' BRADLEY PULVERIZER CO. 92 State St. Boston., scientific american, 1897-12-04
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