Device for measuring the static and/or dynamic friction coefficient of an artificial grass lawn for sports fields

A device for measuring the static and/or dynamic friction coefficient of a surface, said device comprising

• a frame,
• a first arm having a first arm end and a second arm end, said first arm being pivotally connected around a first pivot point with said first arm end to said frame and around a second pivot point with said second arm end to a first having a first bar end and a second bar end, said first bar being fitted at said first bar end with a body that has a surface placeable into contact with the surface to be measured,
• loading means for exerting a force on said first bar in a direction of the surface to be measured,
• the first bar being provided with means for measuring forces occurring in the first bar, which means are present at a point located between the second pivot point with the first arm and the first bar end, the first bar end being capable of carrying said body,
• said bar being connected with said second bar end around a third pivot point to means for exerting thereon a torque, which torque acts about the third pivot point thereon, thereby displacing said body relative to said frame.