Purity Tester *300g/0.001g, 6K-24K *RSC232 interface,LCD Screen *Parameter setup: ... :4/5:5 *Test Density,Percentage,Karat 300g/0.01g 6K-24K Density Purity Tester MODELMH-300KMaximum weighing300gMeasurable range5-300gWeighing precision0.01gAverage ... , Thermometer, Tweezers, Calibration weight, Acadapter, Opration manualManufactureNapco Precision Instrument Ltd 300g/0.01g 6K-24K Density Purity Tester