A speed sensor fastened to a front fork constituting a bicycle with a cable tie includes a sensor body having a reed switch detecting movement of a front wheel in the bicycle, and a rubber pad tied up on the front fork and rotatably holding the sensor body to vary a distance between the front wheel and the reed switch.

 
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< Amusement apparatus operative as a dynamo battery charger

> Toy track devices

> Bicycle display device

~ 00564