Klein Tools' 150th anniversary limited edition tape measure, No. 915-25, features a unique self-lock blade that automatically locks the blade. In addition, the power return rule is designed with oversized, easy-to-read numbers and a dual-end hook that allows for effortless attachment. The tool features architectural markings in 1/8" and 1/4" scale printed on the first 10' on the back side of the nylon-coated blade for easy elevated and flat surface measurements. The ruler weighs less than a pound, is one-inch wide and can be extended to 25'.