How It's Made

4:30 AM to 5:00 AM
Wednesday 22 January
+

Retractable Ballpoint Pens/Solar Salt/Tubas

Season 14 Episode 13 of 13

The manufacture of retractable ballpoint pens, solar salt and tubas

How It's Made airs on Quest HD at 4:30 AM, Wednesday 22 January. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
Technology