Four=Cylinder Perfection THIS MEANS ACCURACY these tools turn out must be just right-not Adding Machine is made by highly skilled mechanics. The working parts are of the finest grade of Reel. All this means ACCURACY-absolute guaranteed accuracy - like you get in a very fine watch and the one thing above all others which you must have in an Adding Machine. The scientifically correct Principle of the Standard-its few parts simple mechanism durable construetion light weight portability easy operation superior speed and large adding board. That's the whole secret- 19 keys and only 10 figure keys


Four=Cylinder Perfection THIS MEANS ACCURACY these tools turn out must be just right-not Adding Machine is made by highly skilled mechanics. The working parts are of the finest grade of Reel. All this means ACCURACY-absolute guaranteed accuracy - like you get in a very fine watch and the one thing above all others which you must have in an Adding Machine. The scientifically correct Principle of the Standard-its few parts simple mechanism durable construetion light weight portability easy operation superior speed and large adding board. That's the whole secret- 19 keys and only 10 figure keys- initead of the confusing maze of many rows on the old-time machines. old-style machine. The Standard lists as it adds and footings The Standard Must Sell Itself and there's not the slightest obligation to buy. If the machine will pay for itself and earn steady an your own office and figure it out on its per This coupon for your convenience. The Standard Adding Machine Co. 404 Spring Ave St. Louis Mo. to this business. Name TRADE MARKS Steel Fishing Rods 'Bristol' Luck BI-PED TACK PULLER One Foot for Matting Tacks One Foot for Carpet Tacks Kangaroo Trick Lock Free and Package of Interesting Matter und Samples of Specialties. GENERAL SPECIALTY MFG. Bum Pm. WARREN'S Walrus Roorint DRILLING Machines Sure and True ARNICA Tooth Soap STRONG'S Sent postpaid on receipt of 25 cents. CHICAG HANG IT THE PRICE PYROMETER $1852 STANDARD Merkel Motor Co. DETROIT ENGINE WORKS H. P. MARINE ENGINE $33, scientific american, 1906-03-10


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