Hand Held Metal Detectors
Metal Detector vs. Magnetometer
If you are searching primarily for nonferrous metal (gold, silver, lead, brass, bronze, aluminum, etc.), the best piece of equipment is a metal detector (Pulse 8X or SAR-1).
If you are searching primarily for ferrous metal objects (iron and steel), the best piece of equipment is a magnetometer (DiverMag-1). The advantage of using a magnetometer is that it has a much greater detection are than a metal detector.