10225 Features: -Combination square.-Sturdy zinc body features solid brass hardware.-Self-locking, spring-loaded blade assures firm, accurate settings.-Steel blades are treated to resist rust and are permanently impressed in 8ths and 16ths on one side, and 16ths and 32nds on the other.-Equipped with virtually unbreakable level vial.-Steel scriber is securely fixed with holding collet.-Zinc head.-12".