Axis digital readout +5micron KA300 linear scale encoder. Hole patterns, centerline calculation. Reset, tool error compensation. Absolute /Incrmental, Inch / Metric. Message Prompts, Memory back-up. 85V-250V, Can be used Globally. Power down c/w Interrupt set. Tings 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. Resolution :0.0002(0.005mm). Signal : TTL square wave/ EIA-442(option). Sealed anti oil and coolant. Cable length is 3 meter. Each scale come with a fitted aluminum cover and mounting screws. SINO KA300-120mm, 170mm, 220mm, 270mm, 320mm, 370mm, 420mm, 470mm, 520mm, 570mm. 620mm, 670mm, 720mm, 770mm, 820mm, 870mm, 920mm, 970mm, 1020mm 5um resolution for this price. SINO SDS6-2V DRO 1pc. DRO install ARM 1pc. KA300 linear scale 2pcs. Bracket 2pcs English manual x 1pc Screw x 2bags. We are confident in the quality of our products. We don’t sell cheap scales, we sell reliable scales and readout. Once you installed on, I don’t want you take it off and repair. We focus on the quality and price of each unit. I can even bring price d. Own if I sell cheap scales, but customers will suffer. Please write if you have any questions. We would be more than happy to provide detailed information about our products. It’ll just take you 1 minute. We will work with you to solve any problems.