Aug
28
2007
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The ball

The ball – Qualities and Measurements

The ball is:
- spherical
- made of leather or other suitable material
- of a circumference of not more than 70 cm (28 ins) and not less than 68 cm (27 ins)
- not more than 450 g (16 oz) in weight and not less than 410 g (14 oz) at the start of the match
- of a pressure to 0,6-1,1 atmosphere (600-1100 g/cm2) at sea level (8,5 lbs/sq in 15,6 lbs/sq in)