Cast Iron Weight M1 250kg/500kg Roller Weight

Cast iron weights will vary in weight value due to moisture absorption (even from the atmosphere), corrosion (rust) and wear. Even small daily/weekly and seasonal variations can be expected. They are highly magnetic so will be effected by magnetic fields from electric motors and electronic balances etc.

With typical light use, cast iron weights will retain their weight value to within ½ to ¼ of the original tolerance over a one year period. Good clean dry storage will improve this. With regular use, the weight variation may fall below the original tolerance, due to wear, within less than one year. Cast iron weights are adjustable, so have your weights checked and readjusted regularly to maintain the tolerance. Cast iron weights should be re-calibrated annually.