A gauge for measuring the rate of taper and the radius of the inside surface of a tapered, arcuate brake block has {HEAD ~ a base plate} which pivotally mounts {TAIL ~ a swing arm} with an indicator for visually reading the variation of the radius of the internal surface from a specified radius 
pivotally mounts
A gauge for measuring the rate of taper and the radius of the inside surface of a tapered , arcuate brake block has { HEAD ~ a base plate } which pivotally mounts { TAIL ~ a swing arm } with an indicator for visually reading the variation of the radius of the internal surface from a specified radius
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH