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Simple and Affordable Metal Detector Kits by ThietbiThinghiem is a document available to read on EtoBox.
What is Simple and Affordable Metal Detector Kits about?
The document describes two metal detector kits, Metal Detector-1 priced at $14.00 and Metal Detector MkII at $15.00 plus postage, both offering similar performance to more expensive models. The Metal Detector-1 uses an ordinary AM radio to produce sound and can detect small coins up to 10cm deep. Both detectors operate on the same principle of detecting changes in frequency or voltage across a coil.
- Author
- ThietbiThinghiem
- Language
- EN