False start rope：
(1) The foul recall sign line consists of two 48.3mm diameter 304 stainless steel poles with a height of 2m and a thickness of 2mm.
(2) There is a quick rope gripper installed on the marker post, which facilitates the referee to quickly release the foul marker rope.
(3) The foul marker rope is 30m long, and the vertical pole of the foul call line is set at 15m from the end of the pool, crossing the width of the pool.
(4) The foul recall line pole is installed at a distance of 15m from the end of the pool
(5) The embedded parts of the marker post are made of 314 stainless steel material, with a height of 125mm
(6) The embedded parts include grounding and static conductive bolts, which are connected to the upright pole in a plug-in type. The upright pole can be flexibly disassembled, making it easy to move the wall.
Backstroke turn indicator：
(1) The backstroke turn marker line consists of two 48.3mm diameter 304 stainless steel poles with a height of 2m and a thickness of 2mm
(2) The backstroke line is 30 meters long and crosses the width of the pool.
(3) The backstroke turn marker pole is installed at a distance of 5m from the end of the pool.
(4) The embedded parts of the marker post are made of 314 stainless steel material, with a height of 125mm.
(5) 3. The embedded parts include grounding and static conductive bolts, which are connected to the upright pole in a plug-in type. The upright pole can be flexibly disassembled, making it convenient to move the wall.
