| 摘要 |
a. Wheel for measuring a length, whose axle is intended to be connected to a member producing length data proportional to its angle of rotation when the periphery of the wheel is applied in rotation on to an article and moves relative to this article; b. Measurement wheel characterised in that it is composed of a part 2 with circular section, made of an elastically deformable material, covered at its periphery with a tread (strip) of flexible material 3 which is inextensible in the direction of its length; c. The invention applies to the measurement of a length. <IMAGE>
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