Caliper Rule
grabcad
The Caliper Rule is explained in further detail at this link: http://goo.gl/3CbVKC
Download Model from grabcad
With this file you will be able to print Caliper Rule with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Caliper Rule.