Check the listing for details. 2Axis LCD DRO with 2pc Linear Scale 8" 38"(200+950mm)Digital Readout for Milling. Condition: New. Listed at 235.99 USD. 2Axis LCD+200&950mm 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 200mm+950mm (8" & 37") 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.