| 摘要 |
A metronome is disclosed including a casing accommodating a driving device for a pendulum, the casing having an elongate trough-like body covered by a cover plate. The driving device is mounted on the inside of the cover plate. An imprinted scale plate associated with the pendulum is mounted on the outside of the cover plate. The pendulum is fixed on a shaft mounted in a bridge on the cover plate and driven by the driving device. Two screws fix both the bridge and a frame of the driving device to the cover plate. Holders integrally formed on the inside of the cover plate, at a location spaced above the fixing screws, engage with and retain the frame of the driving device. The scale plate can thus present a wide uninterrupted surface on which tempi and beat rates can be imprinted and related to each other.
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