General 3 in. x 1/2 in. Straight Leaf Feeler Gauge

The General 3 in. x 1/2 in. Straight Leaf Feeler Gauge is an essential precision measuring tool designed for automotive, mechanical, and machining applications. It provides accurate gap measurements for adjusting spark plugs, distributor points, valve clearances, and verifying tolerances between machined parts. Constructed from durable steel, each leaf is clearly etched with its thickness in both thousandths of an inch and millimeter equivalents for versatile dual-unit readings. A knurled locknut securely holds the leaves in the desired position during use or folds neatly into the protective steel holder for compact storage.