The SM ELETTROTECNICA Srl. company born from the twenty-year experience of the holders, which from always have occupied of electric industrial and civil plant engineering and the study of new technologies to it correlated.

In the 2003 it is born the idea of the pocket calculator for electricians, a simple use tool, turned to all the operators of the electric sector, which allows the electric lines dimensioning in electric plants in continue current, alternated monophasic and alternated three-phase.