Specific gravity calculation can be used to determine the authenticity of metals coins, bars, and other precious metals.

This product was developed with affordability, and portability in mind. The standard specific gravity testing device costs over 10 times the amount of this SG tester, and the only difference is that the user has to make a simple calculation on their own to determine the specific gravity.

The calculation is a very simple two step process - all information needed comes with device.

This unit is also portable. It is designed for easy setup and take down for the mobile precious metals buyer.

Please Note*** The only items that specific gravity doesn't work well on are the items that can create air bubbles such as certain types of chains, earrings, and especially hollow gold. This issue is not unique to this type of gravity tester, even the expensive calculators have the same issue.***