SINO SDS6-2V DRO 2 Axis Lathe Digital Readout and 5micron KA300 Linear Scale KA500 Glass Encoder Metal Casing. Option “Only one 2-Axis DRO”. 1 piece Sino SDS6-2V 2 Axis DRO Display. This option no includes linear scale. 1 piece SDS6-2V 2 Axis DRO Display. 2 pieces KA-300 0.005mm linear scales. 2 pieces KA-500 0.005mm slim linear scales. 1 piece KA-300 0.005mm linear scale. 1 piece KA-500 0.005mm slim linear scale. How to select scales length. There are 70mm, 120mm, 170mm, 220mm, 270mm, 320mm, 370mm, 420mm, 470mm, 520mm, 570mm, 620mm, 670mm, 720mm, 770mm, 820mm, 870mm, 920mm, 970mm, 1020mm for choose. There are there are 70mm, 120mm, 170mm, 220mm, 270mm, 320mm, 370mm, 420mm, 470mm, 520mm for choose. Scale length means scales working travel length. Bolt hole patterns, centerline calculation. Preset set and zero reset, tool error compensation. Absolute / Incremental, Inch / Metric. Message Prompts, Memory back-up. 85V-250V, Can be used Globally. Mainly digital display Functions. Power down c/w Interrupt settings memory & Console sleep mode. Linear compensation, compensate linear reading error. Metric & Imperial display Absolute & Incremental co-ordinates. Linear & segmented compensation program to match scales to console. Advanced calculator including trigonometric functions. 200 position zero memory & 200 Tool zero offset positions. PCD [bolt hole], Rough Arc milling, Inner pocket milling, Center finding. Radius finding, Oblique line of holes, Angular processing. Radius & diameter display. Plus EDM and Grinder Function. This display has 100% milling function, plus 100% lathe function, that makes it 200% unique. It’s a real mill and lathe combine function unit. One unit does it all, any time switch between mill and lathe. KA300 Linear scale features. KA500 Linear scale features. Model: KA500 Available measurement: 70mm, 120mm, 170mm, 220mm, 270mm, 320mm, 370mm, 420mm, 470mm, 520mm Total length: available measurement +112mm Size cross section size: 18mm x 20mm Input voltage: 5VDC Output signal: TTL Resolution: 5um(0.005mm) Cable length: 3 meters. We do our best to serve our customers the best that we can. We offer the 1-month free replacement. Buyers may request for a replacement within 15 days from your receipt of the product. We also provide 12-month free maintenance. Before returning the items, please confirm the return address and the logistics method with us. Please leave feedback and 5 stars if you are satisfied wiht our items and services. We will do our best to solve any problems and provide you with the best customer services.