Percentage table of tiny bore depth degree of detectable

The utility model discloses a percentage table of tiny bore depth degree of detectable relates to the graphite product processing technology field, including the table body, adjustment seat, lock nut, table body downside is equipped with the sleeve, be equipped with the measuring stick in the sleeve, the measuring stick runs through the table body, the adjustment seat cover is established at telescopic surface, the upper surface of adjustment seat is equipped with with sleeve complex axle sleeve form protrudingly, bellied top is the inclined plane, bellied surface is equipped with the screw thread, the screw -thread fit of lock nut and protruding surface and lock nut's internal surface are equipped with the scarf with protruding top cant tie. The utility model discloses a cant tie of the last scarf of lock nut and protruding tip, when lock nut reciprocated with the screw -thread fit of protruding surface, under the interact between scarf and the inclined plane, the protruding of separated can be combined clos