Abstract: A device for measuring the friction on a surface, comprising a measuring wheel (1) and an arm (2) is attached to the wheel axle (3), and a spring (6) is attached between the measuring wheel (1) and its axle (3). The spring is arranged to resist the rotation of the measuring wheel (21), when the measuring wheel (1) is moved by the arm (2) on the surface (5) under measurement. The arm (2) is rigid and is provided with a straight part (8) which is permanently attached to the axle (3), and at the other end (2b) thereof there is provided a pull handle (4), the arm (2) is provided with an inclination indicator (9). In the measuring position, the straight part (8) of the arm (2) is kept parallel to the surface (5) under measurement. The pull handle (4) is then kept further than the radius (R) of the measuring wheel (1) with respect to the surface (5) and is rotatable about an axis parallel to the axle.