1.Weigh Scales Calibration: 7 Pcs Of Calibration Weights Include 1G, 2G, 5G, 10G, 20G, 50G, 100G, A Total Of 188 Grams. Various Scales For Precise Measuring. Enough Quantity For Your Use. 2.High-Quality: Our Calibration Weights Use Steel Chrome Plating Manufacturing Process, The Workmanship Is Fine. Super Mirror Polished, Smooth And Corrosion-Resistant. 3.Accurate Measurement: These Small Weights Are Useful To Test The Accuracy Of Scales, Keeping Your Scale Calibrated. Making Your Experiment More Effective. 4.Wide Range Of Use: Our Scale Calibration Weights Suit For General Laboratory, Commercial, Educational Use. Such As Digital Pocket Scale, Jewelry Carat Scale, Diamond Scale, Precision Balance Test. 5.What You Get: 1G*1, 2G*1, 5G*1, 10G*1, 20G*1, 50G*1, 100G*1, Welcome Guide