gear with partly broken teeth from a historical machine 2

background badly bevel bevelgear blurred broken closeup condition creak damaged detail down element exhibition force gear historic historical historicalmachine iron machine machinepart machines metal old oldmachine outdated outworn part partly parts pieces powertransmission rim ring rod rods rotation rust rusty screws signs spots squeak steel steelgray strong technology technologydetail teeth traces turn use used wear wheel worn