Gram Calibration Weight 1g 2g 5g 10g 20g 50g 100g Scale Calibration Weight Set

It does not come in original box. This set of calibration weight comes with 7 pieces of weights and 1 piece of tweezers, convenient set for using. Specification:  Gram weights: 1 g, 2 g, 5 g, 10 g, 20 g, 50 g, 100 g Material of the weight: steel with chrome plated finish  Material of the tweezers: stainless steel with anti-static finish  Package included:  1 x Calibration weight (1 g) 1 x Calibration weight (2 g) 1 x Calibration weight (5 g) 1 x Calibration weight (10 g) 1 x Calibration weight (20 g) 1 x Calibration weight (50 g) 1 x Calibration weight (100 g) 1 x Tweezers Warm notice: it is normal that there may be slight error around -0.005 to +0.005 g. Features & details Calibration weight set: 7 pieces of calibration weights include 1 g, 2 g, 5 g, 10 g, 20 g, 50 g, 100 g, various scales for precise measuring, 1 piece of tweezers for convenient picking and error reducing Good material and workmanship: steel construction of calibration weight with chrome plated finish for well stability, corrosion resistance, and low magnetic susceptibility, good quality and durable Convenient and easy use: this set of scale calibration weight is a good choice for keeping your precision scale calibrated and accurate Come with a tweezers: the anti-static tweezers makes you more convenient to picking weight, and avoid direct touching to make sure the weighing data Wide suitable occasion: suit for general laboratory, commercial, educational use, and so on; The permissible erro