Full-size measuring tools are often too awkward and unwieldy for hobby use . . . and that's why this mini measuring set will soon be your go-to tools for all your hobby projects. Durable, long-lasting all stainless steel set includes a 180 to 0 / 0 to 180 degree (marked in 1 degree increments) protractor with smooth-moving 7-3/4 inch beam and knurled brass set screw; unique 0 to 5/8 inch (front) / 0 to 16 mm (back) diameter gauge (marked in 1/64 inch / .1 mm increments); and 6 inch long x 1/2 inch wide machinist's-style ruler with convenient pen clip - you'll never misplace this ruler again - marked in 32nds and 64ths with decimal equivalents on the back. Black markings are sharp, dark and easy to read. Once you get this set you'll wonder how you got by without it.