Multi-functional opening moment spanner

The utility model discloses a multi-functional opening moment spanner. The multi-functional opening moment spanner includes: the open joint for apply the tightening torque for nut or bolt, and the event marker, include: refill, spring and sleeve pipe, the sleeve pipe is one end confined cylinder tube-shape for store ink and installation spring and refill, the refill through the spring can elastic expansion fill in said sheathed tube inner chamber, said sleeve pipe is fixed the opening part of open joint. The multi-functional opening moment spanner passes through to be in the same place event marker and open joint installation, can realize coating with lacquer the affirmation from the moving point when nut or bolt tightening moment are given to the spanner of doing all can surely with the opening, and the quality hidden danger emergence that the hourglass of union nut moment was tightened is ended to effective the prevention, has saved the artifical step of confirming of coating with lacquer simultaneously again, has improved production efficiency.