100g Calibration Kit with Tweezers and Weights 10mg-100g Gram Weights: 1 by 100g, 1 by 50g, 2 by 20g, 1 by 10g, 1 by 5g, 2 by 2g, 1 by 1g Milligram Weights: 1 by 500mg, 2 by 200mg, 1 by 100mg, 1 by 50mg, 2 by 20mg, 1 by 10mg Case Dimensions: 4''(L)x 2.2''(W)x1.8''(H) Suitable for general laboratory, commercial, and educational use