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ESCALATORS
Escalator-The moving stair |
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| An escalator is a moving staircase – a conveyor transport device for carrying people between floors of a building. The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal. ANLEV | INFRAELEVATORS |
How Escalators work
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| Beaconelevator |
