Which detail is given in the chapter about "discus event the athlete" in Rules And Techniques?
Starting The start of a race is marked 5 cm wide by a white line.
In the discus event the athlete stands inside a throwing circle of 2.5 mt (8'-212") diameter.
The weight of discus for men is 1 kg.n 3.
Pole vault The rules require that athletes do not move their hands along the pole.