Swanson’s 8" Sliding T-Bevel is used to transfer angles & as a depth gauge in many construction & woodworking jobs. The addition of a level vial aids in precise measurements & transfers. The blade is made of stainless steel & can be securely fixed in place with the knurled knob. The T-bevel gauge has a heavy duty composite handle. A great & handy tool for angle layouts & measurements. Swanson 8" Sliding T-Bevel With Level