a first biasing means operatively connected to said spindle for biasing said measuring element in {TAIL ~ a direction} for projecting from said head and thereby for biasing the outer end of said measuring element to abut against {HEAD ~ the inner wall surface} of a hole in a workpiece for measuring such hole 
a first biasing means operatively connected to said spindle for biasing said measuring element in { TAIL ~ a direction } for projecting from said head and thereby for biasing the outer end of said measuring element to abut against { HEAD ~ the inner wall surface } of a hole in a workpiece for measuring such hole
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH