... Gold Testing 1.Capability: 5-300g 2..Power: 100-240V 3..Display: gram, gold K, %, specific gravity 4..precision balance Jewelry Tester ... radiation,Ag Calibrationmini computer to save report by USB Jewelry Tester Analysis Elements: Au ,Ag ,pt ,Pd,Rh ,Ru ,Cu ... help to distinguish the interested elements clearly and conveniently. When the testing is over, the testing report will be shown timely. NAP-7800 ...