Anyone had any experience with this unit?
Does it really work as advertised?
Precious Metal Verifier
http://www.sigmametalytics.com/
Any other non-destructive alternatives (eg. cheapest XRF)?
Does it really work as advertised?
Precious Metal Verifier
http://www.sigmametalytics.com/
Any other non-destructive alternatives (eg. cheapest XRF)?