Finely Balanced Nickle Plated Steel Calibration Weights Set Are Ideal To Use For Mini Digital Scales. These Scale Weights Are Designed With High Precision And Have A Permissible Error Of +/-0.003G. With An Accuracy Tolerance Of +/- 5Mg, Thee Weight OfferPrecise Measurements For Jewellery Or Accessories. We Provide Die-Cast Iron & Steel Metal Weights That Are Coated With Nickel-Plating For Long Lasting Use. The Coating Of Each Calibration Tools Guarantees A Rust-Free QualityWith No Chance Of Early Oxidation So You Can Use It Even On Wet Areas. Convenient And Portable, These Are Ideal To Be Used Anywhere. The Test Weights Are PackedIn A Container Box With Foam-Lined Cover To Keep The WeightsSafe And Damage-Free. Suitable For Commercial, General Laboratory, And Educational Use. Quality Craftsmanship Provides You To Use This Calibration Weight Alone, Or Combine It With More Weights To Calibrate Accurately With Your Digital Weighing Scale. Perfect For Checking Digital Or Pocket Scale As Well As In Jewellery, Herbs, Gems, Pocket Scales, Kitchen Scales, Chemicals, Pharmacy Use, And Other Accessories. Care Instructions: To Ensure That The Scales Are Accurate, They Should Be Kept Clean, Batteries Need To Be Changed On Proper Interval Of Time. Each Kit Come In Various Quantity Selections: 5Pcs Is 105G Grams In Total - 1 X 50G, 2 X 20G, 1 X 10G, 1 X 5G 6Pcs Is 205G Grams In Total - 1 X 100G, 1 X 50G, 2 X 20G, 1 X 10G, 1 X 5G 7Pcs Is 500G Grams In Total - 1 X 200G, 2 X 100G, 1