Wire Measurer accommodates a wide variety of flexible materials from 1/64” (.4mm) to 7/8” (22mm) diameter. Accurate to within 1/2%. Quickly interchangeable guide tubes for small or larger materials. Counter indicates FEET and INCHES to 9,999’11”. Resets to ZERO with the turn of a knob. Mechanical cutter available adds 2”(50mm) to width of Measurer. Metric version available.