Drill Presses

accurate adjustment BACK GEAR LEVER barrel bolt calipers cast-iron chapter chips Cincinnati Bickford Tool clamp column Company FIG correct final reading CORRECT READING countersink Courtesy Delta Manufacturing cubic cutting edges CUTTING SPEED cylinder Decimal Delta Manufacturing Co drill chuck Drill Diameter drill press table drilling machine driving clutch lever flute gallon grinding hand feed hand wheel head illustrated in Figure indicated jig borer largest number lathe lathe tool length lip clearance measuring metal micrometer necessary number of graduations number of unmarked piece plate position radial drill rake angle ratchet stop reading in thousandths reaming revolution line round stock screw thread sensitive drill shown in Figure sizes small drill Soluble oil speeds and feeds spindle steel step block surface Tap Drill TAP WRENCHES taper shank taper tap thimble thin tion twist drill type of drill unmarked graduations Vernier scale vise zero