Adam's OIML weight sets are available in several classes. E2 weights offer superb accuracy for calibrating analytical and precision balances. F1 weights are suitable for calibrating precision balances. M1 weights are excellent for calibrating compact balances.

Stainless steel weights for durability and accuracy
Aluminium case to safely store weights

These weights are supplied with a statement of calibration confirming they are within the specified tolerances of the weight class. This is not a full calibration certificate.