Density meter: This device is designed to accurately assess the purity of gold and other precious metals using advanced technology to analyze density,providing essential information about composition. Precision weighing: Utilizing advanced microelectronics and high-precision sensors,this density analyzer effectively detects changes in sample weight with an accuracy of up to 0.01 g. Versatile power supply: This precious metal measuring instrument features a built-in large-capacity battery for extended standby time and offers two power supply options: charging and direct plug-in. Upgraded display: Equipped with an upgraded LCD backlight,the operation panel presents data in high definition,making it easy to read under various lighting conditions,with real-time power status indication. Connectivity options: This gold purity tester includes an RS-232 interface for connecting multiple devices such as computers and printers,enhancing data recording efficiency and streamlining printing processes.