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Questions, corrections and suggestions all land in the same inbox and are read. Corrections to the reference tables are the most useful thing you can send: if a figure on this site disagrees with your machine's manual or with what your machine actually does in your ground, tell us which page, which row and what your machine reads, and it will be checked and fixed.

We cannot tell you what a specific find is worth, identify a coin from a description, or advise on whether a particular piece of land is legal to detect. That last one genuinely does depend on your national, state, county and municipal rules and on the landowner, and getting it wrong has consequences, so ask the landowner and your local authority rather than a website.

Brands, retailers and affiliate managers should use the partner page instead.