Distance measurer of two-hand holding rod ring surrounding for shoulder joint flexibility exercise

The invention relates to a sports instrument, which solves the distance measurement problem during two-hand holding rod ring surrounding. An exerciser sits on a seat (4), the right hand straight arm forwards extends to hold a right hand holding point zero starting part (1), the left hand straight arm forwards extends to hold a surrounding rod left hand holding slide sleeve (6) of a surrounding rod (2) with meter ruler scales, the shoulder joint ligament is stretched through ring surrounding shoulder turning after the arms pass a position above the head, the surrounding rod left hand holding slide sleeve 6 held by the left hand can freely slide along the surrounding axis according to the shoulder joint flexibility degree, the shoulder joint is used as an axis, and when the surrounding rod is turned to a position behind the body, the distance between two hand jaw parts can be clearly observed on the surrounding rod (2) with the meter ruler scales. Five different lifting holes (10) are arranged in a support rod