एस्केलेटर
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thumb|150px|eskeletar eskeletar (aangrezi:Escalator) ek vaijnanik upakaran hai.
- eskeletar chalati huee yaantrik sidhiyaan hai.
- eskeletar ke anek bhag is prakar se ju de hue hote haian ki dekhane mean ve sidhi jaise hi dikhaee dete haian aur usi ki tarah prayog mean bhi lie ja sakati haian.
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sanbandhit lekh
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