What's the Difference Between Metal Detector Coils? – Metal Detector Universe
Coil32 - Multi-winding round bundle loop for metal detector
Types of search coils in metal detectors | Orient Detectors
Search Coil Types
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Info on Search Coil Types, Designs and Sizes
Design and Verification of Search Coil Inductance for Pulse Induction Metal Detection
Figure 6 from Metal detector head analysis | Semantic Scholar
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