Check the listing for details. 2/3 Axis Digital Readout Linear Scale DRO Display 5um for Bridgeport/Knee Mill. Condition: New. Listed at 49.39 USD. US 2Axis/3Axis DRO Display Kit Digital Readout TTL Linear Glass Scale Milling 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 available 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 RESOLUTION OPTIONALUS 2Axis/3Axis DRO Display Kit Digital Readout TTL Linear Glass Scale Milling 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 available 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 RESOLUTION OPTIONAL