Understanding the markings on a pool table is an important step toward improving accuracy and consistency. Many players notice the small dots along the rails but are unsure of their purpose. Learning how to use the dots on a pool table can help players visualize angles, plan shots, and develop better control during games. This article explains the function of these dots, how they are placed, and how players can use them effectively in real play.
What Are the Dots on a Pool Table?
The dots on a pool table, also known as diamond markers, are small sights embedded along the rails. These markers are evenly spaced and serve as visual reference points for players. Most standard pool tables have diamonds on all four rails, positioned in a consistent pattern.
The primary purpose of these dots is to help players judge angles and distances, especially when making bank shots or kick shots. They act as a guide system rather than a strict rule, allowing players to estimate where the cue ball or object ball will travel after contacting a cushion.

Standard Placement of Pool Table Dots
Diamonds Along the Rails
A regulation pool table usually has 18 diamond markers:
- 3 diamonds on each short rail
- 6 diamonds on each long rail
These diamonds divide the rails into equal segments. The corner pockets are not counted as diamonds, but they help complete the visual symmetry of the table.
Relationship to Table Geometry
The dots are placed based on the table’s geometry, not decoration. Each diamond represents a proportional distance along the rail. By learning these proportions, players can better predict ball movement, especially when cushions are involved.
How to Use the Dots on a Pool Table for Aiming
Using Diamonds for Bank Shots
One of the most common uses of the dots is for bank shots, where the object ball hits a cushion before entering a pocket. By lining up the cue ball and object ball with a specific diamond, players can estimate the correct angle.
For example, if the object ball is near one diamond and the target pocket aligns with another, the player can visualize a straight path between these points to guide the shot.
Kick Shot Guidance
Kick shots require the cue ball to hit one or more rails before contacting the object ball. The dots help players calculate the rebound angle. While exact results depend on speed and spin, the diamonds offer a reliable starting reference.

The Diamond System Explained
Basic One-Rail Diamond System
The most commonly taught system is the one-rail diamond system. In this method:
- Each diamond is assigned a simple numerical value.
- Players mentally connect the starting point, target point, and rebound point.
- The cue ball is aimed to strike the cushion near a specific diamond to reach the intended object ball.
This system helps reduce guesswork, especially in defensive or safety shots.
Limitations of the System
While useful, the diamond system is not exact. Cloth condition, cushion response, ball cleanliness, and stroke speed all affect outcomes. The dots provide guidance, not guarantees, and must be adjusted through practice.
Using Dots for Position Play
Planning Cue Ball Control
Position play is about where the cue ball stops after a shot. The dots can help players estimate how far the cue ball will travel after contacting a rail. By using the diamonds as distance markers, players can plan routes that avoid clusters or set up the next shot.
Multiple-Rail Routes
Advanced players often send the cue ball across two or three rails. In these cases, the dots serve as checkpoints. Visualizing the cue ball passing near specific diamonds helps maintain consistency in complex patterns.
Common Mistakes When Using Pool Table Dots
Relying on Dots Alone
A frequent mistake is treating the dots as exact aiming points without considering speed or spin. English applied to the cue ball will change rebound angles, sometimes significantly.
Ignoring Table Conditions
Different tables respond differently. Old cushions, loose rails, or worn cloth can alter how the ball reacts. Players should always test the table before relying heavily on diamond-based shots.
Practice Tips for Learning Diamond Usage
Start With Simple Drills
Begin by practicing straight bank shots using one rail and a single diamond reference. Focus on repeating the same shot to understand how the ball responds.
Record Patterns Mentally
As you practice, notice patterns that work consistently. Over time, your understanding of how to use the dots on a pool table will become instinctive rather than calculated.
Conclusion
The dots on a pool table are valuable tools for players at every level. They provide a structured way to understand angles, improve banking accuracy, and plan cue ball routes. While they are not a substitute for practice, learning how to use them correctly can significantly improve decision-making and shot execution. By combining diamond references with experience and table awareness, players can build a more reliable and controlled game.