Perform routine testing of balances securely with high grade calibration weights. Save time and cost with regular verification. This unique approach means you can rely on accurate measuring results. Cultivate the Accurate Weighing Habit. High Grade Cast Iron Casting. Convenient Grip Handles provided for lifting of the weights. In accordance with International Recommendation OIML R111. Casting Is Free Of Cracks, Blow Holes and breakable edges. Each Weight has its own adjustment cavity at the bottom of the weight.