File:Electronic edge finder.jpg

Summary
Author: Stephan F. Salazar S. published at StephanFerdinand.com with DFDL v1.2 license. GFDL license verificable here: http://stephanferdinand.com/picture-license.html

Original image URL: http://stephanferdinand.com/images/stories/Coordinate%20set%20instruments/DSC_1428.jpg