You can find out more information about the capabilities and limitations of metal detectors in the book, Modern Metal Detectors, by Charles Garrett. At what depths can a detector find treasure?
It depends. Many factors can affect how deep a detector can detect, such as the condition of the soil, the material of a detected object and the quality of the detector itself. The size and surface area of a target also affects detection. For example, the larger a metal target, the easier and more deeply it can be detected. Therefore, it’s impossible to predict with complete certainty how deep a specific detector can be expected to find something. Generally speaking, a detector equipped with a standard-sized eight- or nine-inch searchcoil can be expected to detect: Small jewelry (e.g., necklaces, thin gold rings) at 3 to 6 inches Large jewelry (e.g., class ring) at 6 to 12 inches Small coins (e.g., dime, penny) at 4 to 6 inches Large coins: (e.g., quarter, silver dollar) at 6 to 12 inches Mason jar lid at 9 to 16 inches Coffee can at 1 to 2 feet Cannonball, helmet, etc.
Related Questions
- You can find out more information about the capabilities and limitations of metal detectors in the book, Modern Metal Detectors, by Charles Garrett. At what depths can a detector find treasure?
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