... and DensityKarat’s rangeIt can set the gold karat’s high limit and low limit, like:5K-24K, 6K-24KProportion ... value and DensityPt’s rangeIt can set the platinum’s high limit and low limit, like:1000k-600k,1000k-500kPurity ... , Thermometer, Tweezers, Calibration weight, Acadapter, Opration manualManufactureNapco Precision Instrument Ltd 300g/0.01g 1K-24K Density Electronic Metal Tester