The 24-inch polystyrene level is a high-impact composite polymer so it's lightweight yet tough. • High-impact polystyrene frame for durability (unbreakable with normal use). • Three high visibility vials (accurate to 0.001 inch) with top view center vial. • Ruled edge for accurate measuring (1/8" and 1/16" graduations molded into the level won't scratch or fade). • Won't damage surfaces such as wood, paint or tile. • Lightweight yet designed for heavy-duty work. The 24-inch polystyrene level from Mayes is high-impact composite polymer so it's lightweight yet tough. It features three high visibility vials (accurate to 0.001 inch) for easily finding level, plumb or 45°. A ruled edge ensures accurate measuring with 1/8 inch and 1/16 inch graduations molded into the level so they will never fade or scratch off. Level Type: Carpenter; Mason; Leveling Axis: Horizontal; Vertical; Rule Length: 24"; Standard Scale: 0.06".