Differently sized gear wheels on an old hand operated timber derrick, Portland Heights, Portland, Dorset, England, UK.

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Size: 4740px × 3688px
Location: Portland Heights, Portland, Dorset, England, UK.
Photo credit: © Leslie Garland / LGPL / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: [timber, advantage, cast, circular, construction, crane, derrick, devise, diameter, differently, dorset, engineering, england, english, gear, gearing, gears, hand, heights, iron, lifting, machine, mechanical, mechanism, meshing, metal, motion, operated, physics, portland, power, quarrying, ratio, science, simple, size, sized, spoked, steel, teeth, tooth, toothed, torque, transmission, uk, wheels, wood, wooden