Precise direct measurements. Includes a large 2-1/4" diameter dial indicator with 1" or 30mm range. Extremely accurate throughout its full range. Dial is both continuous and balanced with revolution counter. May be rotated for any setting point. Range: 1.001". Graduations: .0011". Reading: 0-100This is designed for making comparative test where precision counts. It's extremely accurate throughout its full range. Also features a dial that is both continuous and balanced with revolution counter. This comes packaged in a plastic blow-molded case.