8460: Sharpening, honing, lapping, grinding machine tools

846011: Num controlled surface grinders, accurate to 0.01mm 846019: Surface grinding machines accurate to 0.01mm nes 846021: Num controlled grinding machines nes, accuracy 0.01mm 846029: Grinding machines nes, accurate to 0.01mm 846031: Sharpening (tool, cutter grind) machines, num control 846039: Sharpening (tool, cutter grind) machines nes 846040: Honing or lapping machines 846090: Machine tools for finishing metals, nes 8460: Sharpening, honing, lapping, grinding machine tools