re: Garrett & Wizzard Metal Detectors

I have one of the Garrett Pro Pointer AT pinpointers.  I about wore it out actually.  Used it hard for years.  Also have one of the older black models.  They do work well for checking for metal in boards.  when I did our deck and was using the old lumber, I went over each piece with the Garrett carrot.  Saved my tools from nails and screws.  One thing that I recommend is to take the battery out if you're not going to use it for some time.