Some small places where larger bevels can't fit, this little sliding bevel excels in small dovetail marking, tight corner and boat building. sliding bevel gauge are handy tools when building boats, this bevel angle gauges just the right size for the tight places that abound on a boat. Small size is well-suited for apron pockets, it's small that you can have it with you all the time while you're working with odd angles. duty T-Bevel is made from hardened carbon steel is perfect for professionals, contractors, and homeowners. The mini bevel gauge is easy to transfer or marking angles when cutting wood for projects. The blade of the sides to be straight and the locking mechanism to be quick and secure. boat building has a lot of internal corners, it happens a lot in boat building and in remodeling. In order to cut out precise parts for your boat, you need to know where to cut,you need a bevel gauge. Dimension Folded Size: about 4 inch Extended Size: about 6.7 inch Blade: about 2.7 inch