Ball Point Pens

We all use them every day – ball point pens. Invented around the time of World War II, they took over from fountain pens and dominated the pen industry.

What Took China So Long to Master Ballpoint Pens?
https://www.youtube.com/watch?v=BQX_cNBZ3Hk
How It’s Made Ballpoint Pens
How a Retractable Ballpoint Pen Works
How Does a Clicky Pen Work?
What’s the Difference between Ballpoint, Gel, & Rollerball Pens?
How A Ballpoint Pen Works Close Up

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