Escalator

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Escalators in a Copenhagen Metro station, Denmark, Juin 2007

An escalator is a vertical transportation device in the form o a muivin staircase – a conveyor which carries fowk atween fluirs o a biggiin. It conseests o a motor-driven cheen o individually airtit steps. Thir steps are guidit on either side bi a pair o tracks which force them tae remeen horizontal.