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