Fisher Gemini 3

The Gemini 3 is a two-box locator rather than a coin detector, and it answers a completely different question: where is the large buried metal? Pipes, cables, property markers, caches and old foundations, at depths far beyond anything a standard detector reaches. It ignores small targets by design, which is what lets it see the big ones deep. Utility locating and cache work are its jobs, and it has been doing them without much need for redesign for a long time.