Skip to product information
1 of 2

Escalators

Escalators

Regular price $8.95 USD
Regular price Sale price $8.95 USD
Sale Sold out
Tax included.

This book discusses how an escalator is based off a conveyor system, moving objects up and down using gears. This form of transportation has made it more convenient to go from one floor to another without walking up flights of stairs.

View full details