Government and establishment of the metric system in Iran

In the Qajar period and following the increasing exposure of Iranians to Western civilization, the need for modernization in the field of units of measure, under the title of metric system was felt by the politicians and thinkers and it was implemented by the government at the time of Reza Shah Pahlavi. Since, the government was responsible for establishing a metric system, it turned into a tool to achieve the government goals. The present study examines the process of establishing the metric system in Iran and the goals of Reza Shah's government from the establishment of the metric system using a descriptive-explanatory method. Here, the main question is what goals the Reza Shah government pursued in establishing the metric system.  The findings indicate that the connection with Western civilization and the need to investigate Iran's backwardness led to the correction of weights and values ​​based on the metric system to facilitate trade. The metric system has been established not only to facilitate trade, but also to increase government control and oversight of all members of the society.