Here’s an example of hunting with a small Mars Sniper coil for the Garrett ACE 250 metal detector. The finds: coins. With maximum sensitivity of the detector, no false responses, good ferrous and non-ferrous metal division and original discrimination scale saved. Watch the video.
This is the coil from Mars MD (alternative manufacturer). It’s also produced for other metal detectors. Type: DD. Shape: ellipse. Size: 10 x 6 inches (25 x 15 cm).