The laser unit is attached to a magnet with two pivots to give a full three degrees of freedom when aiming. The battery box holds two AAA bateries and also has a magnet.
Locating holes when dimpling with the C-Frame or DRDT, guiding work on a drill press, and finding the valve stem access hole location on a wheel pant are just a few uses... let us know what you come up with!
Below is a short introduction of the tool from our Aug 2013 Builders Hangout. (Timecode 16:15-18:10)