DIY Vernier caliper
thingiverse
Crafting Your Own Vernier Caliper with a 26mm Steel Plate Ruler. You're about to build a handy vernier caliper using a readily available 26mm wide steel plate ruler and some clever modifications. Let's take a closer look at each component of this project. The white part you see is actually the servo rocker arm, while the elastic part is fashioned from a medicine bottle cap.
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