Aluminum rail with raw code, for working with an electronic level. It is used during research works in engineering and geodetic studies, topographic surveys, construction and other works. The rail has a telescopic design, which can be folded in one straight line and folded into a single section with a total length of no more than 1.5 m. The front surface of the rail has protective ribs that prevent abrasion of the working surface during operation. On one side of the rail, the raw code is applied, and on the other, a scale with a price of 1 mm is applied.