Das original! It’s the German-made Messograf caliper pen from Cleo Skribent. Built into the retractable ballpoint pen is a 4″ Vernier caliper that measures in increments of both 0.1mm and 1/16″. The pen also functions as a metric screw thread scale and a tire tread depth scale. Garrett-Wade carries them.
Always Have Calipers On Hand
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. His free weekly-ish maker tips newsletter can be found at garstipsandtools.com.
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