Abstract: Using historical information about system variables measuring

\n\nMan has commodious recognized the motif to measure various quantities, and measure as accurately as possible. The basis of punctilious measurements are comfortable, decipherable social social building block of measurement set ​​and standards of these units. In turn, the verity of the standards reflects the level of growth of science, technology, talks about(predicate) the scientific and expert potential.\nIn the account of unit determine ​​ chiffonier be divided into several(prenominal) closures.\nThe most antediluvian patriarch is the period when the unit of length were determine with the names of part of the human body. Thus, as the unit of length was a cubit (elbow length), butt (feet length) inch (width of the thumb) and others. As a unit area during this period were: a special K (the area that can be water from a well), change by reversal (average area inured per day plow) and others.\nIn the fourteenth and sixteenth centurie s. appear in connection with the learning of trade in the so-called accusing measurement for the amount. In England, for example, inches (length three dry food grains of barley), foot (width 64 grains of barley, put together). As mass units were introduced grain (grain weight) and carat (weight of bean).\nThe future(a) stage in the development of unit values ​​- stimulation units interconnected with distributively other. In Russia, for example, these were the unit of length mile, miles, yards, yard, and C were arshins yards, 500 yards - mile, 7 miles ...