| 摘要 |
A instrument pedal has a plate adapted to be inclined and pivotally connected to the base and having a recessed area, an auxiliary plate with a pattern formed on a face of the auxiliary plate and being securely yet detachably received in the recessed area; a stop engaging the first connecting flange of the auxiliary plate to secure the auxiliary plate in the recessed area and a pressing plate provided to engage the second connecting flange of the auxiliary plate to secure the auxiliary plate in the recessed area.
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