Tri Electronics GXL-24 Professional Electronic Gold Tester (6K - 24K)
Tri Electronics GXL-24 Pro Electronic Gold Tester + A/C Adapter
Tri Electronics GT-4000 Professional Electronic Gold Tester (6K - 24K)
Tri Electronics GXL-NEXT Professional Gold and Platinum Tester
Tri Electronics G-24 Portable Electronic Gold Tester (6K - 24K)
Tri Electronics GXL-NEXT-GOLD Professional Gold and Platinum Tester
