SDS2MS/3MS Digital Readout for Boring Machines, Lathes, and Milling Machines. Power Supply Voltage: 100V240V, 50 Hz60 Hz. Display: 7-inch TFT-16.7M color high-resolution industrial wide-temperature capacitive touch screen. Number of Axes: 3 axes. Input Signal: TTL square wave. Input Signal Frequency:? 5 MHz. Digital Linear Displacement Resolution: 0.1? M. Digital Angle Resolution: 0.0001°/PULSE.