Worm gear made from wood in 1874

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Dolapkinya mill - architectural, ethnographic museum Etara - Bulgaria. Worm gear made from wood in 1874

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Size: 5472px × 3648px
Photo credit: © Tihov Studio / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: bulgaria, economical, energy, environmental, etara, history, machine, mill, museum, power, transmission, water, wheel, wooden