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Оригинальное название:

Make a really loud referee or police whistle | 2013 New Years Noisemaker

Метки: На английском, Образование, Обучающие видео, ТВ шоу

Язык оригинала English

This really loud whistle is also known as a "pea whistle" because it has a little ball, or pea, inside that gives it that recognizable trilling sound. It's quite easy to make. If you don't have a bandsaw, this would be a great project to use an inexpensive coping saw.