DRO 20i for lathes2-axis DRO for lathes: Innova 20i TFurther informationDRO 30i for lathes3-axis DRO for lathes: Innova 30i TFurther informationDRO 40i for lathesDRO for 2 and 3 axes lathes: Innova 40iFurther informationDRO 40i – TS for lathesDRO for up to 4 axes lathes: Innova 40i-TSFurther information 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