| 摘要 |
<p>A device for measuring the friction on a surface, the said apparatus comprising a measuring wheel (1), the axis (3) thereof, around which the measuring wheel (1) can be made to rotate, an arm (2) which is attached to the axis (3), and a spring (6) which is attached in between the measuring wheel (1) and its axis (3), and which spring is arranged to resist the rotation of the measuring wheel (1), when the measuring wheel (1) is moved by the arm (2) on the surface (5) under measurement during the measuring operation. The invention is characterized in that the arm (2) is stiff and uniform, and that at the first end (2a) thereof there is provided a straight part (8) which is permanently attached to the axis (3), and at the other end (2b) thereof there is provided a pull handle (4) or a corresponding member. In addition to this, 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). The pull handle (4) is rotatable in the longitudinal direction of the other end (2b) of the arm (2).</p> |
