It is just the legal limit that has been set under the rules of Golf. 1.68 is also known as the Golden Ratio.
its a golf ball
The maximum diameter of a golf ball is 1.680 inches. In professional golf a ball can not weigh more than 1.620 ounces.
The Golf Ball has a diameter not less than 1.680 in (42.67 mm).
The diameter of a standard tennis ball is approximately 6.7 cm.
The diameter of the golf ball must be at least 1.680 inches or 42.67 millimeters
Let's assume that your golf ball is 1.680 inches in diameter - the smallest size golf ball allowed in certain golfing associations. Then we know that the circumference of the golf ball will be the distance it would roll in one complete rotation. Circumference = pi * diameter Circumference = 3.14 * 1.680 in Circumference = 5.2752 inches = the distance that this particular golf ball would roll
The diameter of a golf ball is not less than 4.27 centimeters.
a golf ball weighs no more than 1.620 oz (45.93 grams), has a diameter not less than 1.680 in (42.67 mm)
The standard diameter of a golf ball is supposed to be not less than 42.67 millimeters. So 13 millimeters is a tiny bit less than 1/3 of the way through a golf ball.
In the old days the R&A used a 1.62 inch diameter golf ball. But now everyone uses the same size, as stated in Appendix III, Section 2: "The diameter of the ball must not be less than 1.680 inches (42.67 mm)."
Ping Pong Ball / Table Tennis Golf Ball Cricket Field Hockey Lacrosse Billiards / Pool Squash Are all smaller in diameter than a baseball
The main feature of a golf ball is called the dimple.