The Isoscel-Ease Drawing Robot

Maybe you’ve built your own drawing robot, but I doubt it comes with a geometric pun like the Isoscelease pen plotter device. As the name would imply, this robo-plotter uses a constantly varying isosceles triangle that is able to angularly expand and contract as well as move as a unit back and forth. This allows […]

Caliper pen

Caliper pen

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