Plastigage Engine Bearing Clearance Gauge Indicator Plasti Guage - Blue

Plastigage clearance indicator used for checking engine bearing clearances. Simply place on the rod or main bearing, torque to spec, then check the filament to the chart on the packaging. Very easy and accurate way to check clearances. Three ranges of clearance: Green= .001 inch to .003 inch, Red= .002 inch to .006 inch, Blue= .004 inch to .009 inch.