Ten-pin bowling regulations, identification letters and numbers, and general wear from normal use. For much of the history of bowling, bowling balls were made using a three-piece construction method. Starting in the mid-1990s, however, most manufacturers switched to a two-piece method. In response to these innovative ball designs, the American Bowling Congress placed further restrictions on the technical characteristics of the ball such as the radius of gyration and hooking potential. A game of bowling consists of ten frames. In each frame, the bowler will have two chances to knock down as many pins as possible with their bowling ball. In games
Ten-pin bowling In Britain "Mintel International Group Ltd" produced a "Market Research Report" in July 2004 which gave the UK's Tenpin bowling sales and market by sector from 1999–2003 and also the type of customer. The Indian Tenpin Bowling Association (ITBA) produces the magazine "Go Tenpin". However, it is not specific to the United Kingdom and is highly respected around the globe in ten-pin bowling circles. (The final issue of the magazine was August 2009 it has been superseded by an online e-zine). The United States Bowling Congress (USBC) publishes a magazine for its entire membership called "U.S. Bowler". Other widely acclaimed