33H Series Combination Squares, 4 in, 1/64 in @ 1 in, 16ths; Quick Read 64thsMulti-purpose uses include45 miter, depth gage, height gage, marking or scribing gage, a level, a plumb, and a precision ruleSteel scriberReversible lock bolt allows blade to be turned over or end-for-end, without removing the lock bolt