MH-300K

Precious Metal Purity, Gold Karat Tester MH-300K

It can show Karat、Density of Gold and Purity%、Density of Platinum

GP-120K

Precious Metal Purity, Gold Karat Tester

GP-120K /300K /600K/1200K

It can show ：

Gold Karat(gold-copper-silver, gold-silver, gold-copper) switches

Gold purity%(gold-copper-silver, gold-silver, gold-copper) switches

GP-300K/1200K