Moire Caliper by Mojoptix

Last crawled date: 3 years, 1 month ago

The episode in [ENGLISH]: http://www.mojoptix.com/?p=178
L'episode en [FRANCAIS]: http://www.mojoptix.com/?p=182Note: To see more inventions and contraptions (like this other one ), suscribe to Mojoptix on Youtube !--------------------------------------------------------------------------------------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-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 might help visualize a bit the Assembly (refer to the section "Post-Printing" below for more details): http://www.youtube.com/watch?v=-yDPLzs7wKM