The bevel square is made of stainless steel for durability and corrosion resistance. It also includes the plastic vial with anti-slip rubber. The square is typically used to measure the size of workpieces, inclination of the setting through the blade and find the perfect angle. It can be 360-degree adjustable with scales to tell angles in 15, 30, 45 as well as 60 degrees. The scales are clear in both inches and millimeters. Additionally, it also comes with a tube of torpedo levels, making it ideal for specialists who require the precise measurement and calculation.