Patent ID: 6490805
Filing Date: 2002-12-10
Classification: G01B

Abstract:
A gage for a bore, said gage comprising:an indicator unit; a head; a linkage operatively connecting said head to said indicator unit; a reference contact disposed on said head; a lever mechanism having a first arm with a distal end and a second arm with a distal end, said lever mechanism being pivotally mounted to said head at a position intermediate the distal ends of said first and second arms; a first contact disposed on the distal end of said first arm of said lever mechanism, said contact being moveable toward and away from said reference contact upon pivoting of said lever mechanism; a second contact disposed on the distal end of said second arm for engaging said linkage to cause movement of said linkage in response to pivoting of said lever mechanism; a pivot mechanism having a first arm and a second arm, said first and second arms of said pivot mechanism being disposed on opposite sides of said first contact on said lever mechanism and being pivotable about a common axis on said head, said pivot mechanism having a centralizing contact on a distal end of each of said first and second arms for centralizing said head in a bore to be measured; and a member connecting said first and second arms of said pivot mechanism and extending around said head on a side thereof opposite said first contact on said lever mechanism.