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* [http://goodcountry.org/index/overall-rankings Country Ranking] | * [http://goodcountry.org/index/overall-rankings Country Ranking] | ||
== Wheels and Pulleys == | |||
<br> | |||
* The system simply works by pulling the thread. The wheels which in fact act as gears make the swabs move in opposite direction. | |||
[[File:Mechanical System 1]] | |||
[[File:Mechanical System 2]] |
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