image appears to show a digital electronic gold and precious metal density/purity tester (or a similar high-precision analytical solid density balance) featuring a Dini Argeo branded display and keypad unit combined with a specific testing chamber/platform.OverviewDevice Type: Digital electronic density meter / gold purity and karat testing instrument.Brand/Label visible: Dini Argeo (display housing/indicator unit).Application: Typically used based on Archimedes' principle to measure the density, karat value (K number), and purity percentage of precious metals like gold, platinum, and silver without damaging them.