TM 9-243USING A DRILL POINT GAGEThe method for sharpening the cutting edges of a drill isto do one lip at a time. Each lip must have the samelength and have the same angle in relation to the axis ofthe drill. Set the sliding head securely on the rule at themark equal to the length of the drill. Place the drillvertically against the rule so that the drill lip contacts the59 degree angle of the sliding head. Hold up to light;correct angle is obtained when no light is seen betweengage and drill.USING A WIRE GAGEDetermine the size of both sheet stock and wire by usinga correct sheet and plate or wire gage.USING A DRILL GAGEThe drill gage is used to determine the size of a drill. Thedrill size, number and decimal size or letter size arestamped on the gage beside each hole. A chart on thegage indicates the correct size of drill to use for a giventap size.16-8
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business