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Regulation size and weight for a football is a circumference of 68–70 cm (27–28 in) and a weight of 410–450 g (14–16 oz). The ball is inflated to a pressure of 0.6–1.1 bars (8.7–16.0 psi) at sea level. [20] This is known as "Size 5". Smaller balls, Sizes 1, 3, and 4, are also produced for younger players or as training tools. [20]
Adidas Tricolore, the official ball for the 1998 World Cup. Law 2 of the game specifies that the ball is an air-filled sphere with a circumference of 68–70 cm (27–28 in), a weight of 410–450 g (14–16 oz), inflated to a pressure of 0.6 to 1.1 atmospheres (60–111 kPa or 8.7–16.1 psi) "at sea level", and covered in leather or "other suitable material". [7]
The official playing field in Canadian football is larger than the American, and similar to American fields before 1912. The Canadian field of play is 110 by 65 yards (100.6 by 59.4 m), compared to 100 by 53 + 1 ⁄ 3 yards (91.4 by 48.8 m) in American football.
The new-shaped ball was so quickly accepted that the National Football League of Australia eventually used the size and shape as standard. Sherrin began production in 1897 in a workshop in Collingwood , which had produced a variety of leather sporting goods since 1880, including footballs, cricket balls, boxing gloves and punching balls.
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The football changed in 1934, with a rule change that tapered the ball at the ends more and reduced the size around the middle. This new, sleeker ball made it much easier to handle, particularly for passers, while at the same time making the drop kick unreliable and obsolete. [ 5 ]
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The Adidas Tango 12 (Polish pronunciation: [ˈtaŋɡɔ dvaˈnaɕtɕɛ]) was the official match ball of the UEFA Euro 2012, [1] with variants being used for the 2012 Summer Olympics. The ball is named after the original and successful Adidas Tango family of footballs from the late 1970s, but the construction of the Tango 12 is completely different.