Combination square set designed for depth, height and level measurement or scribing operations in plumbing, instrumentation and automotive services Cast iron heads, with a black wrinkle finish, used to lay out or check right and 45 degree angles and a machine-divided hardened ...Combination square set designed for depth, height and level measurement or scribing operations in plumbing, instrumentation and automotive services Cast iron heads, with a black wrinkle finish, used to lay out or check right and 45 degree angles and a machine-divided hardened steel blade for high durability Comes equipped with a reversible scriber, lock bolts, a spirit level and double 180-degrees protractor scale for user convenience Grainger SKU:26Y931, Cross reference:50042