• Made of high-hardness chrome-plated steel with corrosion resistance for a long service life. • Double hook design allows for convenient picking up and placing of the weights, avoiding inaccurate measurements. • The kit includes 4 calibration weights of 200 g each with an accuracy of ±2 %. • Suitable for use in laboratories, classrooms, or at home in studies of pressure, force, torsion, and other experiments. • Includes a compact storage box for easy transport and to protect calibration accuracy.