The utility model relates to a the electricity sector's maintenance instrument specifically is a touching of isolating switch contact indicates that installation is very heavy, including axis (1), the left end cover of axis (1) is equipped with left side arm (6), the left end head of axis (1) passes through bearing fixed mounting fixed part (2), the right -hand member of axis (1) passes through screw thread mode installation right side arm (7), fixed set up twist grip (3) of right -hand member head of axis (1), left side arm (6) upper end and right side arm (7) upper end are respectively through oblique side arm (8) articulated installation top arm (4), left side arm (6) lower extreme and right side arm (7) lower extreme are installed at end arm (5) through oblique side arm (8) are articulated respectively, top arm (4) medial surface is seted up three touching and is indicated groove (9), end arm (5) medial surface is seted up three touching and is indicated groove (9). The utility model relates to a rationally, simple structure, should install very heavy convenient to use, swift, can install the contact fast, fine practical value has.