Craftsman Stud Finder: Find Stud Center and Edge Demo
How to use craftsman stud finder.
First, it need a 9V battery to operate, which is not included in the stud finder itself.
Steps to find the stud center and edge
1) Place it on flat surface
2) Press and hold the on button
3) Wait for the calibration to be done
4) Move slowly from left to right, and detect the left edge
5) Move slowly from right to left, and detect the right edge
6) The midpoint between two edges is the center of the stud