Milescraft 8401 Trim45 Trim Carpentry Aid The Trim45 trim carpentry aid is the handiest tool in the toolbox when it comes to installing door and window casement trim Unique measuring and marking device eliminates fumbling with tape measures when determining length of finish trim Unique to the Trim45 is an adjustable reveal setting ranging from 1/8" to 1/2", in 1/8" increments Tape measure slots & rare earth magnets make it easy to measure jamb openings & trim stock without any assistance Built in clamp pad is designed to work with any clamp & 45 angled head for marking miter cuts