Golf Marker (Level, Scale, Magnetic) [Product Condition] New [Dimensions] Diameter 4cm, Thickness 0.5mm This marker can also be used to read the slope of the green. It has the functions of a level, spirit level, and inclinometer. Please use it as a training tool to understand the slope numerically and match it with your visual sense. When using it in competitions, it may be a good idea to get the consent of your fellow competitors. It cannot be used in official competitions. The back reacts to magnets, so you can attach it to your hat with a clip. ↓ There are wonderful golf goods #SEESAMER★SHOP Product List