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9 adjustments actual test amount of error angle of clearance boring boxed for export Capacity Carbo CARBORUNDUM centre circle described CODE WORDS constitutes the drill Crated cutting edge desired DIMENSIONS distance traveled dotted line drill can possibly Drill Grinder style drill point drill rotates drills mechanically correct Driving pulley dry wheel Electrically driven emery Floor space occupied four lipped drills gage jaw machine geometrical lines give this perfect grind a drill ground mechanically correct GUARANTEE hand ground drills hole inch belts inch drill Let the line loose pulleys Machine ground drills machine is built Magneto makers Medium metal motor moving holder PATENTS peripheral circle point and periphery portion possibly be ground ratio of clearance Reamers revs Run countershaft saving SCIENTIFIC DRILL GRINDING sizes of drills small drills solid base Style F STYLE of drill Tight and loose utterly impossible Weight gross workmen's Yankee Drill Grinder