| 摘要 |
A measuring wheel apparatus where the rotatable wheel is mounted upon a conical recessed hub, a counter mechanism is secured to the wheel and extends within the recessed hub, the counter mechanism being adapted to record the rotational movement of the wheel, the wheel being connected to the counter mechanism by the flange of a sleeve element which is threadably secured within the counter mechanism, the driving connection for the counter mechanism being established by a shaft passing through the sleeve element, the shaft being attached to a cap which is secured to the hub of the wheel.
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