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RT @hackaday: Marvel at the high technology behind the humble ballpoint pen.
https://hackaday.com/2020/12/17/tech-hidden-in-plain-sight-the-ballpoint-pen/
(original)
RT @hackaday: Marvel at the high technology behind the humble ballpoint pen.
https://hackaday.com/2020/12/17/tech-hidden-in-plain-sight-the-ballpoint-pen/
(original)