identify metals |
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| Ad Posted: | Wednesday, December 18, 2024 | |
| Ad Expires: | Sunday, February 16, 2025 | |
| User Information: | ||
| Posted by: | goldcaver9 | |
| User Location: | Ticonderoga, NY | |
| Ad Information: | ||
| Condition: | N/A | |
| Ad Description: | ||
identify metals- penny in water=+, metal = -, voltmeter. gold = ~ 170 mv or less , alum = ~400 , silver = ~300 , zinc = ~600 , lead = ~500 | ||