Moire Caliper

The episode in **[ENGLISH]**: http://www.mojoptix.com/?p=178
L'episode en **[FRANCAIS]**: http://www.mojoptix.com/?p=182
Note: To see more inventions and contraptions (like [this other one](https://www.thingiverse.com/thing:1068443 "Digital Sundial") ), suscribe to [Mojoptix on Youtube](https://www.youtube.com/c/mojoptix_com "https://www.youtube.com/c/mojoptix_com") !
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**Tadam !**
A fully working caliper that uses a Moire pattern to reach a precision better than 0.05 mm. The accuracy should be better than 0.5mm.

No batteries, no electronics, no gears... It's just a couple of images sliding one on top of the other. The two images have been mathematically designed to display a Moire pattern shaped like an "indicator triangle": the tip of the triangle will indicate the sub-millimeter measurement.

How to use this caliper
Simply read the cm and mm on the main scale, and then the sub-milli