29/04/2021 · 3 Axis DRO Digital Readout Linear Scale For Milling Lathe Machine High Precision. April 29, 2021 admin. Model: DROLinear Scale Kit; Country/Region of Manufacture: China ; Keyboard: Pressure sensitive; Input Signal: TTL square wave EIA442; Resolution: 5 micro () at 20 Celsius; Scale: Optical; Working Temperature: 045° Sealing: Double .