The Milescraft Trim45 Trim Carpentry Aid is the handiest tool in the toolbox when it comes to installing door and window casement trim, as well as decorative trim work projects such as fireplaces or bookshelves. Unique measuring and marking device eliminates fumbling with tape measures when determining the length of finish trim. Unique to the Trim45 is an adjustable reveal setting ranging from 1/8″ to 1/2″, in 1/8″ increments, allowing it to be used on any project in any home or at any job site adding versatility and usability.