Measures in ft and Inch and runs on urethane rollers. Eraser's WMI series measuring meters are specifically designed to measure long lengths of wire, cable, flat cable and other flexible materials used in the electrical, electronic and associated industries. Units are available measuring in ft and Inch or in M and 1/10 M and are self-adjusting for material diameter or width. - Eraser's WMI series urethane rollers have a digital counter records the amount of material measured. In cases where the material to be measured has a hard, uneven or slippery outside jacket, the WMIU or the WMMU, with urethane rollers or the WMIG and WMMG with grit rollers, may provide better accuracy.