E1 Class Weights
These weights are of the highest metrological accuracy class and are used as primary reference standards for calibrating other lower class reference weights like E1 and blow classes, E1 class weights are integral /single piece monobloc type weights, and E1 class weights have no method of adjustment. These weights are appropriate for calibrating high-precision analytical balances with readability as low as 0.1 mg to 0.001 mg.
