Moire Caliper

thingiverse

The episode in English: http://www.mojoptix.com/?p=178 L'episode en Français: http://www.mojoptix.com/?p=182 Note: To see more inventions and contraptions like this one, subscribe to Mojoptix on YouTube. Tadam! A fully functional caliper that utilizes a Moire pattern to achieve precision better than 0.05 mm. Its accuracy is expected to be superior to 0.5mm. No batteries are required; no electronics or gears are involved. It's simply two images sliding one over the other. The two images have been mathematically designed to display a Moire pattern in the shape of 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, then the sub-millimeter value on the Moire scale. A couple of short clips Check out this short video to see it in action: http://www.youtube.com/watch?v=W-Au9vlV2nQ This short video may help visualize the Assembly (refer to the section "Post-Printing" below for more details): http://www.youtube.com/watch?v=-yDPLzs7wKM