The Kapro 325M Magnetic Lock Combination Square is used for verifying 90- and 45-degree angles in woodworking, stonemasonry, and metalworking applications. The magnetic lock with six rare-earth magnets holds the rule in place for accurate measurements. The 12-inch rule has etched graduations in inches and centimeters that are staggered in a height pattern for readability. The square is made of stainless steel and cast zinc for durability. It comes with a belt holster and a stainless steel scribe that is attached to the head by magnets.Kapro manufactures spirit levels, laser levels, layout tools, and measuring tools. The company, founded in Israel in 1974, meets International Organization of Standardization (ISO) standards 9001, 14001, and SA8000.What's in the Box Kapro 325M Magnetic Lock Combination SquareScribeBelt Holster