The lathe dro t5 (10x40) digital system includes 20i t digital readout. Mt 27 linear scale- measuring length 10.6"" / resolution .0002"" ct 102 linear scale- measuring length 40.1"" / resolution .0002"" (2) armored cables mounting hardware for scales and mounting arm for 20i t dro. 20i t features easy to read led display axis preset/reset radius/diameter mode taper calculations and tool offsets. Fagor automation manufacturer of digital readout systems for over 45 years. All digital readout systems are backed by a 5 year warranty.