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How It’s Made Mini-Episodes: Police Whistles
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How It’s Made Mini-Episodes: Police Whistles
In the late 19th century, London police started using a special lightweight whistle to get attention with its piercing sound. In this minisode of How It’s Made, find out how today's sturdy brass police whistles are made.
Video Length: 307
Date Found: May 01, 2011
Date Produced:
View Count: 39
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