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Their most notable brand name is Columbia 300, which has produced some of the most well-known balls in the sport. Beginning in 1960 in Ephrata, Washington (near the Columbia River), Columbia Industries was the first manufacturer to successfully use polyester resin ("plastic") in bowling balls. Prior to this, nearly all bowling balls were made ...
The USBC and World Bowling promulgate bowling ball specifications. USBC specifications include physical requirements for weight (≤16 pounds (7.3 kg)), diameter (8.500 inches (21.59 cm)—8.595 inches (21.83 cm)), surface hardness, surface roughness, hole drilling limitations (example: a single balance hole including the thumb hole for "two-handed" bowlers [3]), balance, plug limitations, and ...
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Bowling is a target sport and recreational activity in which a player rolls a ball toward pins (in pin bowling) or another target (in target bowling). The term bowling usually refers to pin bowling, most commonly ten-pin bowling , though in the United Kingdom and Commonwealth countries, bowling may also refer to target bowling, such as lawn bowls .
The balls are biased in the same way as the lawn bowls balls but with a diameter of about 20 cm (7.9 in), a thickness of 12 cm (4.7 in) and a weight of about 2 kg (4.4 lb), they are a bit bigger than usual bowls. The target is an unmovable feather or metal plate on the ground, instead of a small ball.
: the biased ball used in the game of bowls. The side of the bowl that is biased can be identified by the smaller engraved concentric rings seen, compared to the outer (non biased) side of the bowl. bowling arm a device that enables players, who have an inability to bend as part of a standard delivery action, to bowl in an upright position.
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Scale diagram of bowling pins and balls for several variants of the sport. The horizontal blue lines are 1 inch (2.5 cm) apart vertically. Bowling pins (historically also known as skittles or kegels) are upright elongated solids of rotation with a flat base for setting, usually made of wood (esp. maple) standing between 9 and 16 inches (23 and 41cm) tall.