National measurement standards
In the Republic of Estonia, national measurement standards are fixed in four fields of measurement by the regulation of the Minister of Economic Affairs and Communications.
Mass:
calibration of weights in the range of 1 mg…50 kg
Length:
calibration of length gauges in the range of 0.5 mm…1 m
calibration of tape measures in the range of 1 mm…120 m
Temperature:
calibration of platinum resistance thermometers and digital thermometers in five fixed points (Hg, H2O, Ga, Sn and Zn) and by method if comparison in the range (‑80…+400) °C
Electrical quantities:
Calibration of voltage sources at reference values 1 V; 1.018 V and 10 V
Calibration of voltage sources in the range of 10 mV…1 kV
Calibration of electrical resistors at nominal values of 1 mW…10 kW