These are simple 100 mm calipers that I designed for a class I am teaching at my local Maker Space (http://www.MakerSpace307.org).
The calipers are made using both 3D printing and laser cutting. These calipers are very inexpensive, the total cost per caliper is less than $1.00. Currently they are only capable of outside measurements and only have a millimeter scale.
I made the caliper body with inkscape and the amazing "Scale Generator" extension. http://wiki.inkscape.org/wiki/index.php/Extension_repository#Scale_Generator
LaserCutCaliper.svg | 53.2KB | |
makerspace307_caliper_slide.stl | 14.3KB |