Main Functions: 200 points auxiliary zero position function. Function of function calculator. Power off memory function. Non-linear error compensation. Communication function. Function of time display. Metric/Inch switching display. Mid-split function. AB function. Lengthened linear encoder function. Software diagnosis function. Other Machining Functions: PCD hole positioning on circumference (for milling machine and boring machine). Oblique line drilling (for milling machine and boring machine). Chambering (for milling machine and boring machine). Cutter compensation function (for milling machine). Machining of oblique plane (for milling machine). Smooth R function (for milling machine). 200 cutters database (for lathe). Display of radius/diameter switching (for lathe). Taper function (for lathe). Tremble avoidance function (for grinding machine). EDM machining function (for EDM). PCD function (for EDM). Even positioning function (for slotting machine). Universal positioning function (for slotting machine). Setting slotting parameter (for slotting machine). The DRO adopts 32 bits embedded computing technology, 320×240 5.6” LCD screen in Chinese and English. Up to 4 axes, XY-W-axis can select linear or rotary encoder. The rotary encoder has two display modes for degrees, minutes, and seconds, and for degree only. It has a large hard disk capacity for high-speed data transfer with a PC via a USB interface. It has non-linear compensation of up to 600 points for each coordinate, can make comparative measurements through a dual-frequency laser tester, and save the comparative values in the DRO for mirror image data processing as to minimize the correctional error. Path simulation function is also provided in DRO. It is widely used on Milling machines, Precision coordinate Boring machines, ground Boring machines, Precision Boring machines, Precision grinding machines, lathes, EDMs, etc. Order No. 905-8020