Whenever you buy a used vehicle, you typically have to take the sellers word with regards 
to past accidents the vehicle may have been in. Not anymore. This gadget, by Westfalia, measures the paint thickness to let you know if it is original paint… or an aftermarket paint job. The unit compares the paint job to that on the roof to see if there are any inconsistencies. Smart. The Westfalia paint checker costs under $20.
[Via Westfalia]