Johnson Level 1913-1000 Aluminum T-Bevel, 10 InchIt features a heavy duty adjustable stainless steel blade that will never rust or corrode, as well as a heavy duty solid aluminum handle. Highlights: size : 10 Inch Durable locking nut holds blade securely in place Its durable locking lever holds the blade securely in place to keep your work accurate when transferring angles Professional aluminum T bevel takes the guesswork out of angle duplication and eliminates the problems associated with analog