L.S. Starrett 11H Series Combination Squares Multi-purpose uses include: 45 miter, depth gage, height gage, marking or scribing gage, a level, a plumb, and a precision rule. Hardened, machine divided graduations, blade. Reversible lock bolt allows blade to be turned over or end-for-end, without removing the lock bolt or nut. Steel scriber. Spirit Level Pack of 1