MULTIFUNCTIONAL: This combination square tool is practical and designed to mark straight lines, draw parallel lines, lay out, calibrate, measure router bit depth, set table saw blades. ADJUSTABLE: The combination square tool has small, metal ridges that the rule rests against which can be filed down (very carefully) on either side of the screw to adjust the angle. QUALITY: Matte finished with excellent stainless steel blade that makes this combination square will never rust or corrode, not easy to break. Perfect for 90° and 45° marking. DESIGN: Compared with traditional rulers that just for measuring, this multifunctional ruler meets your various needs that is helpful in most building or construction situations where a right angle and level are needed. DETAILS: Both sides of the 12inch square ruler are available. And measurements on the ruler are clear and easy to read, etched in nicely. It certainly does lock the blade firmly. With precision-etched scales that enables you to be completely accurate and precise., Manufacturer: PaulStore