Traceability of mass measurements in Estonia

Realization of the national mass scale for the optimal coverage of the industrial need for the mass calibrations at the Estonian national metrology institute, AS Metrosert, is described. The cost effective technical solutions to meet the calibration requirements of the advised OIML class E1 weights have been established. The traceability to the International Prototype Kilogram, the measurement capability achieved, and the results of participation in international comparisons are described in detail. The actual need for the mass calibrations in Estonia with respect to the measurement capability of the laboratory is estimated.