SINO 3 Axis LCD DRO Kits Digital Readout KA300 KA500 Linear Scale Encoders SINO 5 languages SDS2-3VA 3 Axis LCD DRO Kits Digital Readout KA300 KA500 Linear Scale Encoders Ruler For Lathe Grinder Milling Machines. KA300 is normal size scale with 21 34mm ; KA500 isslim scale with size 18 20mm;. byJuly 3, 2026