General Tools 230 Straight Leaf Feeler Gauge Set

The General Tools 230 Straight Leaf Feeler Gauge is designed for adjusting and gauging spark plugs, distributor points and valve clearances, as well as measuring the width of small gaps between objects placed very close together. It has 26 leaves and knurled lock nut to hold them in desired position. Each leaf of the gap gauge is etched with a size number (its thickness) in thousandths of an inch and millimeter equivalent. Leaf dimensions: 3"L x 1/2"W. Leaf thickness: 0.0015 to 0.025" (0.038 to 0.635mm).