Cheap And Discounts Lathe Mill CNC KA300 SINO YHSINO Linear Scale 5U 5V TTL 120 170 220 270 320 370 420 470 520 570 620 670 720 770 820 870 920 1020 Wholesale. Buy Directly From Merchant the Manufacturer(Shenzhen) Store of Digital Readout Linear Scales Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.