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October, 1917 THE MARINE REVIEW 87 Here’s the New “GREATER DAYTON” Chipping and Calking Hammer TRY ONE AT OUR EXPENSE! Without doubt the latest development in pneumatic chipping and calking hammers. Has only 12 separate parts, less than contained in any other hammer. Long bearing surfaces increase life of tool 50%. Simplicity in design and low cost of parts cut your repair bills in half. Workmanship and materials in every hammer guaranteed for one year. We also guarantee for life against break- age, the main valve —the vital part of every hammer. The largest shipbuilders, steel plants, foundries and railroads have found that the ‘Greater Dayton’” Hammers withstand the most severe and exacting tests and are the most efficient hammers yet produced. ‘Try one at our expense and if it does not prove to be more satisfactory, economical and efficient than any hammer you have ever used, return it at our expense. Made in several sizes. 90% OF OUR SHIPMENTS MADE SAME DAY ORDER IS RECEIVED. WE ARE THE ONLY EXCLUSIVE MANUFACTURERS OF HAMMERS IN AMERICA. Write today for bulletin 30M DAYTON PNEUMATIC TOOL CO., Dayton, Ohio BOOKS LAKE ERIE BOILER WORKS BUFFALO, N. Y. We can fill your order for any BOILERS, TANKS and PLATE WORK book in print on any subject. or A ae Tell us your needs and we will be glad to recommend the best books for your purpose. THE MULHOLLAND HATCH-FASTENER COMPANY Main 272 Marion Building, Cleveland, Ohio Cent. 1016 Manufacturers of the Mulholland Simplex and Security Hatch Fasteners. For Ocean and Lake Trade. OVER 225,000 SETS NOW IN USE ON THE GREAT LAKES Pentons Book News Penton Building CLEVELAND, OHIO PENTON’S BOOK NEWS Specializes in BOOKS FOR THE MARINER and is prepared to furnish any publication in print. For Prompt Service, send your Orders or Inquiries to us. Address CLEVELAND, OHIO 412 Please mention THE Marine ReEvIEw when writing to Advertisers