Ten-pin bowling line and is applied for at least down the lane from that point. USBC rules specify that a pin must be tall and about wide at its widest point, where a rolling ball would make contact. There are additional measurements which delineate the shape. The weight of a single pin must be at least 3 pounds 6 ounces and no more than 3 pounds 10 ounces (1.53–1.64 kg). Within a set of ten pins, the individual weights may vary by no more than 4 ounces (113.4 g), if made from wood or plastic coated, or just 2 ounces (56.7 g)
Ten-pin bowling is standard WADA recommendation. They were due to be re-instated into the official bowling tournament community in early 2008, subject to WADA and BTBA review. This story was first reported on in Go Tenpin magazine. Pin characteristics, the bowling ball, and the lane surface are regulated by the USBC, BTBA and others. Technological changes throughout the history of the sport have often required new regulations. This continues today, often with great debate. The controversies usually involve "scoreability" related to greater strike carry on less-than-perfect shots. The increasing frequency and degree of higher scoring irks many bowling purists, who say that