Kapro's 321 is a classic woodworking and metalworking tool that lets you mark and check 45°, as well as 90°. It incorporates a 12 inch sliding stainless steel blade that can be locked into position for easy measuring of depth or length. Ideal tool for repetitive markings

12" Stainless steel blade with permanently etched ruler markings (in. and cm)
5 milled sides for superior accuracy
Heavy-duty cast zinc body
Belt holster included
Easy to read vial