Crafted from steel, these precision calibration weights are designed for accurate measurement and calibration of balance scales and jewelry scales. The set includes various weights that ensure precise calibration for different scales, making it an essential tool for jewelers and laboratory professionals who require exact measurements. Features -Color:Silver -Material:Steel -Size:3.80X2.15X2.15cm/1.49X0.84X0.84in -Size:0.80X0.50X0.50cm/0.31X0.20X0.20in -High precision material: made from steel, these calibration weights ensure high precision and stability, meeting the needs of professional laboratory calibration -Multiple specifications: available in various weights (1 g, 2 g, 5 g, 10 g, 20 g, 50 g, 100 g), these weights cover a wide range, suitable for balance scales and jewelry scales -Smooth surface: precision machining ensures a smooth surface, effectively reducing friction errors and enhancing weighing accuracy -Compact design: the compact design of these calibration weights makes them easy to carry and store, ideal for laboratories or testing -High performance: designed for longterm use, these weights maintain their performance over time, reducing the need for frequent replacements in high scenarios Package list: 21 x Calibration Weights (1g, 2g, 5g, 10g, 20g, 50g, 100g)