细节
A drill spindle and cutting frame
of unusual design combining drill spindle, eccentric cutting frame and internal cutting frame, in home-made wood box with twelve e.c.f. cutters and twelve drills; and a lidded rack of approximately 130 O/T drills
of unusual design combining drill spindle, eccentric cutting frame and internal cutting frame, in home-made wood box with twelve e.c.f. cutters and twelve drills; and a lidded rack of approximately 130 O/T drills