How It's Made
Levels/Hot Dogs/Abrasive Grains/Sandpaper
Season 10 Episode 3 of 13
The manufacturing processes behind surveyors' levels, hot dogs, abrasive grains and sandpaper
How It's Made airs on Discovery Channel HD at 6:30 AM, Friday 29 May. (Subtitles.)
Learn more about How It's Made and other education/science/factual topics on our factual page
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