There are 3 "diamonds" per rail for a total of 18.
Use the diamonds as numbers. Then add the numbers of the cue ball and the ball you are trying to hit to get where to aim.
A pool table has 6 pockets
there are 6 pockets on a pool table
Foot spot. This is directly in line with both the second diamonds from the foot rail and the center end diamonds.
There is only one dot on a pool table. This dot goes ay yhe intersection of two imaginary lines - the center of the table, lengthwise, and, the imaginary line between the second diamonds on the side rails at the racking end of the table.
No, if a pool table is not configured as a 6 pocket pool table it is not a pool table today.
The billiard table diamonds, which are often dots rather than diamonds, are placed on the rails to divide the table. The foot string, head string, and table center are found by using the diamonds. In addition, they can be used to determine bank shot calculations. Their distance from playing surface points allow them to be used for more accurate aim and calculations for difficult shots. There are more than 100 published "diamond systems" to calculate bank shots using the diamonds.
There are many pool games that can be played on a pool table. Some pool table games include eight-ball, nine-ball, three-ball, one-pocket, and bank pool.
Brunswick and Olhausen are two of the best, but there are many good pool table brands.