They say some things are immeasurable. Not anymore. With micrometer sets from Zoro, you can now measure almost anything, with sharp precision. An inside micrometer measures the inside dimension of an object, like the width of a groove. A micrometer set is perfect for mechanics, automobile technicians, machinists, tool designers, industrial inspectors, and more. Zoro also has a great selection of bench vises, digital calipers, dial calipers, and height gauges.