Check the listing for details. 2Axis Digital Readout LCD DRO 12"& 48" Linear Scale Kits for CNC Lathe Machine. Condition: New, Made in China. Listed at 439.99 USD. 2Axis LCD+300&1200mm DRO Digital Readout Linear Glass Scale Encoder kit for CNC Applications This DRO kit 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. Use of DROs is not limited to manually operated machines. CNC machines can usually be switched to manual operation, and in this case a form of DRO is simulated on its control panel. Package List 2PCS Linear scale 300mm+1200mm (12" & 48") 1PCS 2Axis LCD digital read out with holder and mount bracket 2PCS Mounting base for scales 2PCS Protective cover for scals some screws for scales 1PCS English User Manual.