Weights by Class E1 E2

Weights by Class   E₁  E₂

These weights are also called calibration weights or precision weights.

OIML Class E₁ – Used as a primary reference for calibrating other reference standards and weights where the stability of the environment and careful handling are assured. Class E₁ weights have no method of adjustment and are not suitable for general laboratory use. The uncertainty is guaranteed to be 1/3 the tolerance.

OIML Class E₂ – It can be used as reference standard weights and for calibration of weighing balances.

All Weights with E₁, E₂ class type are listed in the link below

Cylindrical Knob Type Weights

            Cylindrical Weights

 Milligram weights

           Milligram Sheet Metal Weights

           Milligram Wire Weights