Instrument is drawn to electric power system concentric circles

The utility model discloses an instrument is drawn to electric power system concentric circles, two concentric circless that can draw up simultaneously when electric power engineering designs and draws electric power facility, instrument is drawn to electric power system concentric circles includes: landing leg, first leg, a second leg, first nib, second nib and connector, the upper end of the upper end of landing leg, the upper end of first leg and a second leg all rotate connect in in the middle part of connector, just landing leg, first leg can open into certain angle each other and fix in this angle with a second leg, first nib sets up the lower extreme of first leg, the second nib sets up the lower extreme of a second leg. The utility model discloses simple structure, small and exquisite flexibility, portable, two concentric circless that can draw up simultaneously, the circle and the circular arc sectional view of the equipment such as electric power pipeline among the electric power system that draws up that can be convenient, labour saving and time saving has effectively improved work efficiency.