Metal detectors come in all shapes and sizes, with different capabilities. And these are some from Harbor Freight.
Adventure Archaeology on MSN
Metal detecting old bottles and using a metal detector to find a bottle dump
How to use a metal detector to find bottles!
It has four search modes and works better in wet conditions than cheaper alternatives.
Follow ZDNET: Add us as a preferred source on Google.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results