| 摘要 |
An apparatus 2 for measuring the grip of a subject surface, has a weighted member 4, means 8,10 e.g. a pulling mechanism and chord, for applying a force to move the weighted member 4 with respect to the subject surface, and means 12 e.g. a spring balance, for measuring the force applied to move the weighted member 4. The apparatus 2 has a surface assembly 6 having a test surface for contacting the subject surface and onto which weights (18, fig 3) of the weighted member 4 are applied. The surface assembly 6 has means to allow the test surface to be interchanged, and in another invention, the angle of orientation of the weighted member 4 with respect to the surface assembly 6 can be adjusted. |
