Twenty two scale models of boring tools and appliances

Twenty two scale models of boring tools and appliances, mounted on board:- shell, shell clack, solid swivel rod and tiller, solid rod, reducer rod, chisel, lifting dog (2), hand dog (2), bitch, auger board, hollow rod swivel and tiller, hollow rod, hollow reducing rod, rotary shot crown, core tube, slurry tube, water chisel, rotary tooth crown, connecting block, automatic bitch