› DROs for lathes DROs for lathes DRO 20i for lathes 2-axis DRO for lathes: Innova 20i T + info DRO 30i for lathes 3-axis DRO for lathes: Innova 30i T + info DRO 400i for lathes DRO for 2 and 3 axes lathes: Innova 400i + info DRO 40i – TS for lathes DRO for up to 4 axes lathes: Innova 40i-TS + info Characteristic differences between models: 20i T 30i T 40i 40i-TS Display type LEDs LEDs 5.7" color TFT screen 5.7" color TFT screen Number of axes 2 3 2 and 3 that may be set by parameter 2, 3 and 4 that may be set by parameter