This video demonstrates how to safely use the Maryvale High School counterweight system.
You can also watch the other example of Hayden's counterweight system.
Негізгі бет Фильм және анимация Using the Counterweight System (MVHS)
This video demonstrates how to safely use the Maryvale High School counterweight system.
You can also watch the other example of Hayden's counterweight system.
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