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Print/export Download as PDF; Printable version; In other projects ... Rockwell B HRB (1/16" ball 100 kg) Leeb HLD [1] 800-72-856 780: 1220: 71-850 760:
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.
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Layout: The plan of how a bowling ball's holes, pin and mass bias indicator are located relative to each other. [69] A pin up layout has the pin "above" the finger holes (further from the thumb hole than the finger holes), whereas a pin down layout has the pin between the finger holes and thumb
American nine-pin bowling uses the same ball (and pins) as in ten-pin bowling. [citation needed] European nine-pin bowling balls (such as those used in German kegel) are smaller, sized between ten-pin and duckpin balls, and have no holes. [citation needed] The ball is 16 cm (6.3 in) in diameter and weighs approximately 2.85 kg (6.3 lb).
The B and C scales overlap, such that readings below HRC 20 and those above HRB 100, generally considered unreliable, need not be taken or specified. Typical values include: Very hard steel (e.g. chisels, quality knife blades ): HRC 55–66 (Hardened High Speed Carbon and Tool Steels such as M2, W2, O1, CPM-M4, and D2, as well as many of the ...
Jason Day hits out of a green-side bunker on the 8th hole during the first round of the U.S. Open at Los Angeles Country Club. Pin placement green approaches.
Though ten-pin bowling has not progressed beyond a demonstration sport at the Olympic Games, [3] [80] [100] international games modeled after the Olympics (awarding medals) do include the sport, including the World Games (governed by the International World Games Association), the Asian Games (governed by the Olympic Council of Asia, OCA) [127 ...