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2. Bowling ball - Wikipedia

   en.wikipedia.org/wiki/Bowling_ball

   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 ...

3. Duckpin bowling - Wikipedia

   en.wikipedia.org/wiki/Duckpin_bowling

   Duckpin bowling is a variation of the sport of bowling.. Duckpin balls are 4 + 3 ⁄ 4 in (12 cm) to 5 in (12.7 cm) in diameter, weigh 3 lb 6 oz (1.5 kg) to 3 lb 12 oz (1.7 kg) each, and lack finger holes.

4. Bowling pin - Wikipedia

   en.wikipedia.org/wiki/Bowling_pin

   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.

5. Candlepin bowling - Wikipedia

   en.wikipedia.org/wiki/Candlepin_bowling

   The ball used in candlepins has a maximum weight of 2 lb 7 oz (1.1 kg), and has a diameter of 4.5 in (11 cm), [1] making it the smallest bowling ball of any North American bowling sport. The nearly identical weight of the ball, when compared to that of just one candlepin 2 lb 8 oz (1.1 kg), [1] causes balls to deflect when impacting either ...

6. Bowling - Wikipedia

   en.wikipedia.org/wiki/Bowling

   Bowling balls vary, depending on the type of bowling. Ten-pin balls are about 8.59 inches (21.8 cm) in diameter, typically have three holes, and weigh from 6 to 16 lb (2.7 to 7.3 kg). The size and spacing of the finger holes on non-customized balls are generally smaller on lighter balls to accommodate smaller hands.

7. Use This Age Chart to Date Your Vintage Ball Mason Jars - AOL

   www.aol.com/age-chart-date-vintage-ball...

   Ball Mason Jar Age Chart. Lucky for us, this handy chart can help you keep track of all the Ball jar logos. There are about eight different logos in total, starting in the 1880s and finishing in ...