We are the manufacturer of exclusively Weights since 1961. We are exporting our products since 1972. We are regularly exporting our weights to more than 40 countries. Slotted Weights are used in a variety of applications such as pressure, torque, and tensile strength testing. Cast Iron Slotted Weights are typically used with a hanger that also has its weight calibrated so the hanger can be used as part of the overall weight under test.