Although sliding bevels are not complicated tools, I learned that there are differences among them. Some differences are obvious and others are more subtle, but all have an effect on the quality of the tool. A sliding bevel consists of a body and a slotted blade that pivots on a machine screw or steel pin on one end of the body. A thin opening along much of the body accepts the blade. Manufacturers employ a variety of methods to lock the blade in place. A good sliding bevel will have a body and blade that are flat and straight and a locking mechanism that’s strong yet unobtrusive. The Starrett is an expensive tool, but it performs well. It easily fits into an apron pocket but is still large enough for most applications. The blade slides and pivots along the body, making for easy joinery layout. The blade lock is also very good.

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