This is a Micrometer screw with a dial comparator that enables you to take fast and highly accurate measurements. It offers the following benefits: A self-setting micrometer gauge lets you take rapid measurement of workpieces, especially cylindrical shapes, in batch or mass production situations. In the 25mm measuring range, the model line-up offers a choice of having the anvil retraction button positioned on the left or the right. Large dial comparator for easy reading (+/- 0.06mm). Tolerance markers for GO/NG measurements. 8mm spindle diameter gives you easy positioning and highly accurate measurements.