YQLILGEN YH800 Digital Readout DRO Display. Precision 2/3 Axis Digital Readout for Mini Lathe & Milling Machines. ? High Precision Readout. Delivers accurate 2 or 3 axis position tracking for mini lathe and milling machine setups, helping improve cutting accuracy and reduce material waste. ? TTL Signal with DB9 Connector. Compatible with TTL signal linear scales using a standard DB9 connector for reliable data transmission. ?? Clear Digital Display. Bright, easy-to-read digital screen allows quick and accurate measurement readings even in workshop lighting conditions. ? Ideal for Machinists. Perfect upgrade for hobbyists and professionals working with lathes and mills who need dependable positioning feedback. 2 Axis / 3 Axis. Mini Lathe, Milling Machine. Q: What signal type does this DRO use? A: This unit uses a TTL signal with a DB9 connector for connecting to compatible linear scales. Q: Can I choose between 2 and 3 axis versions? A: Yes, both YH800-2E (2 Axis) and YH800-3E (3 Axis) options are available. Q: What machines is this compatible with? A: Designed for use with mini lathes and milling machines that use TTL signal linear scales with a DB9 connector.