A tool that will become an indispensable assistant in your carpentry workshop is the Woodpeckers Paolini Pocket Rule. You get a ruler with a double scale - 6 inches and 150 mm. The scales are laser engraved on both sides of the ruler with graduations of 1/32"-1 mm and 1/16"-1 mm, as well as a vertical scale on both ends. A fine groove on the end of the ruler instantly turns this tool into a marking gauge. It comes with a stop that slides easily over the ruler. Lock it in place to take repeated measurements on multiple boards. Remove the stopper and insert into the cutout to keep the ruler upright. Use this to adjust the height of router bits, saw blade or circular blade. Woodpeckers Paolini Pocket Rule rulers are available in 2 material options: aluminum or stainless steel and 3 dimension options: inches, metric or combined.