BORA 531120 12-Inch Magnetic Combination Square with Etched Stainless Steel Blade Inch Graduations, High Visibility Vial This magnetic combination square includes rare earth magnets, which are up to 10 times more powerful than conventional magnets And with grab-and-hold power like this, they provide an excellent way to move the ruler Just slide the ruler to the desired position and let go 12-Inch Stainless Steel Ruler Permanently etched with 1/16-Inch and 1/32-Inch increments Rare Earth Marnetic Lock for Ruler and Scribe Cast Zinc Body milled on 5 sides for Superior Accuracy Stainless Steel scale can be turned over or end for end without unlocking a nut due to the patented design Multi-purpose square for layout with a 45 degree miter, depth gauge, level, pulm, percision rule