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View looking up at a building under construction residential building nearby made of concrete scaffolding and an elevator for workers
A block and tackle, a combination of a rope or cable and pulleys, is used to lift heavy weights or exert large forces illustrations, illustration, figure, diagram, tackle, pulley, block, fixed
chain hoist lifting steel frame
A differential pulley is used to manually lift very heavy objects like car engines, vintage line drawing or engraving illustration
An aircrew assigned to U.S
