| 摘要 |
A device for demonstrating and testing electronic meters for bicycles including a body portion having a slot, a rod mounted on the body portion, a plurality of seats mounted on the rod, a first magnet fitted on the body portion, a handwheel partially pivotally fitted in the slot of the body portion, a second magnet fitted on a the handwheel, and an electronic testing device disposed within the body portion and operatively connected with the seats, whereby the device can be used for demonstrating as well as testing electronic meters for bicycles.
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