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A Tecnifibre electronic stringing machine. Electronic stringing machines control the tension with a computer-directed electric motor, resulting in fast paced stringing and exceptional accuracy. This is the most common kind of stringing machine found in racquet sport shops. Reliable constant pull stringing machines usually cost $3,000 and more.
Ektelon, Inc. was an American manufacturer of equipment for racquetball. Originally based in Bordentown, New Jersey, Ektelon was founded by Franklin W. "Bud" Held in 1964 as the first company to manufacture racquetball racquets and stringing machines, [1] not long after the development of the sport of racquetball by Joe Sobek.
Cyclops is a computer system co-invented by Bill Carlton of Great Britain and Margaret Parnis England of Malta, [1] which is used on the ATP and WTA professional tennis tours as an electronic line judge to help determine whether a serve is in or out.
If the player has access to a tennis string tension meter (or access to a pro shop equipped with one), he may restring his racquet after he measures a loss of 25% or more of stringbed stiffness. However, many players who hit the ball hard enough to break the strings simply restring rackets whenever the strings break.
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The lack of raw materials during World War II made the manufacture of new machines difficult and expensive. [6] The first all original amusement device made by Williams was a flipperless pinball machine called Suspense (1946). During the late 1940s and early 1950s, Williams continued to make pinball machines and the occasional bat-and-ball game.
The company was founded in 1970 by Robert Hirt McClure (1893–1991) of Princeton, New Jersey (the origin of the company's name) as a manufacturer of tennis-ball machines, and soon after, rackets. Howard Head , founder of the Head sporting goods company, took tennis lessons following his retirement and used a Prince tennis ball machine, but was ...
Originally the tennis ball consisted of rough cloth strips tightly bound together. Eventually the cloth strips became the core, wrapped in twine and covered by a finer cloth or felt hand-stitched around it. [6] In 1972, at the request of Lamar Hunt to televise World Championship Tennis, the tennis ball was manufactured with the optic yellow ...
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