Check the listing for details. TOAUTO 2/3 Axis 8'' LED Digital Readout Dro Display Glass Linear Scale 4''-40''. Condition: New. Listed at 92.99 USD. 2Axis/3Axis LED DRO Digital Readout Display TTL Linear Glass Scale for CNC LatheMilling Machine Application : This kind of DRO is commonly fitted to machines, especially for metal working — lathes, cylindrical grinders, milling machines, surface grinders, boring mills and other machine tools — to allow the operator to work faster and with greater accuracy. Basic Information : Supply Voltage range : AC 80V~260V; 50~60Hz，US Plug Power consumption: 15VA Operating temperature: 0~45 degree centigrade Storage temperature: -30~70 degree centigrade Relative humidity: Less than 90% Readout allowable input signal: TTL square wave Allowable input signal frequebcy: Less than 5M Hz Max resolution of digital display length: 5µm (0.005mm/0.0002") Min resolution of digital display angle :0.0001/pulse.