Lead Impression wire is the world standard in Precision Clearance Gauges for the measurement of clearance between fitted surfaces. Extremely effective for measuring the clearance of a wide variety of bearing which include automotive/machine bearings, marine drive shaft bearings, turbine housing bearings, pump and pressure system bearings, as well as shaft end-float dimensions, flatness and clearance in pipe-flanges and cylinder heads.  B001QTHDP4