Escalator
From Wikimedia Commons, the free media repository
Fahrtreppe; Escalator; Rullaportaat; Roltrap; Schody ruchome; Rulltrappa; エスカレータ; escalera electrica; zh-min-nan; Tiān-thui
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 Moving sidewalk in Detroit airport |
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 the first escalator in Berlin, 1925 |
Technic
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