Used to adjust tappets spark plugs distributor points checking bearing clearances & gear play fitting pistons rings & pins & gauging narrow slots Leaves are tempered steel easily removed & replaced Locking device on all sets Inch Reading Gauges with Tapered leaves No of leaves 26 Range 00015 0025 Inch Leaf Thickness 00015 0002 00025 0003 to 0025 by 0001 step