The All-Russian Classifier of Units of Measurement (OKEI) is part of the Unified System for the Classification and Coding of Technical, Economic and Social Information of the Russian Federation (ESKK).
It was approved by the Decree of the State Standard of Russia in 07/2000.
OKEI is intended for use in solving problems of quantitative assessment of technical, economic and social indicators in order to carry out state accounting and reporting, analyze and forecast economic development, ensure international statistical comparisons, implement domestic and foreign trade, state regulation of foreign economic activity and organize customs control. The objects of classification in OKEI are the units of measurement used in these fields of activity.
ESKK includes length, area, volume, mass units, engineering units, units of time, economic units.