The Milwaukee 4-1/2 In. trim square is an every-day-carry layout solution. With a more compact size, it fits easily into pockets, pouches, and tight work spaces. High visibility laser etched markings will not wear off, providing trusted accuracy throughout the life of the square, while a 1/4 In. & 3/8 In. dual measurement heel allows for quick marks. Precision scribe notches at 1/8 In. increments. Precision machined extruded aluminum.