How to Maintain a Metal Detector Shaft and Hinges in Your Workbench Setup
Clean the shaft after every use, inspect the hinges and locking collars every 5 to 10 outings.
Metal detecting and backyard prospecting guides
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How to Interpret Metal Detector Tones: What Each Sound Usually Means
On many 3-tone detectors, low tones point to iron, mid tones cover foil, pull tabs, nickels, and small brass, and high tones cover copper and silver.