Bowling ball hole gauging device

Claim 1

A HANDGRIP MEASURING DEVICE COMPRISING A DUMMY BOWLING BALL, A PAIR OF SPACED SLOTS FORMED IN SAID BALL HAVING WALLS PARALLEL TO PERPENDICULAR PLANES INTERSECTING AT THE CENTER OF SAID BALL, EACH OF SAID WALLS BEING FORMED WITH ARCUATE GROOVES, FINGER STALL ASSEMBLIES ADJUSTABLY POSITIONED IN SAID SLOTS, EACH FINGER STALL ASSEMBLY INCLUDING A SEATING ELEMENT SLIDABLY MOUNTED BY THE ARCUATE GROOVES BETWEEN THE WALLS OF THE SLOT, A REPLACEABLE INSERT SEATED ON SAID SEATING ELEMENT, AND LOCKING MEANS MOUNTED ON SAID SEATING ELEMENT FOR BOTH LOCKING THE INSERT IN POSITION ON THE SEATING ELEMENT AND HOLDING THE SEATING ELEMENT IN ADJUSTED POSITION WITHIN THE SLOT, SAID LOCKING MEANS COMPRISING, AN INSERT CLAMPING MEMBER HAVING AN OUTER PORTION ENGAGING THE INSERT IN SPACED RELATION TO THE SEATING ELEMENT AND A BEARING PORTION ENGAGING THE SEATING ELEMENT SPACED FROM THE INSERT, AND SCREW MEANS CONTACTING THE BOTTOM OF THE SLOT AND OPERATIVELY ENGAGED WITH THE CLAMPING MEMBER AND THE SEATING ELEMENT FOR DRAWING THE SEATING ELEMENT TOWARD THE CLAMPING MEMBER.