Calibration Weights To Test Weighing

Weights used for proof load and quality tests do not need to be as accurate as calibration weights used to test weighing equipment. You can choose iron bar weights calibrated to the M1 standard as used for testing scales if you prefer, but we also offer M3 class weights, which have a tolerance 10 times greater than the M1 class. Reducing the accuracy makes the weights less expensive because less time is required to adjust them, and because the tolerance is larger the weights are less likely to drift outside the specified tolerance when using in the more demanding conditions of proof load testing.

Cast Iron M3 class weights are ideal for proof load testing requirements where the weights need to be carried but they can also be moved on pallets or in cages so they make a flexible choice for proof load testing. These weights are supplied to M3 tolerances and are normally purchased with one of the certificate options available as detailed below. These weights are available in 5 kg, 10 kg or 20 kg to suit your requirements.

Our brass hanger & slotted test weights are an ideal choice for many light load, test applications because the hanger with its integrated hook allows these weights to be attached to a large variety of rigs, equipment and materials. The hanger is a weight in itself and is what will hold the rest of the weights. The slotted weights are discs with slots in them that sit on the hanger. The number and size of slotted weights that will fit in the hanger can be varied, allowing tests from 10g to 1000g depending on the weights purchased. Brass slotted weights and hangers can also be ordered with a Newton value for force measurements.