| 摘要 |
A base drum beater amplitude adjustment device comprised of a beater holder mounted around the revolving shaft of the pedal mechanism of a base drum to hold a beater, and a locating device made of a split cylinder and fastened around the revolving shaft to retain the beater holder in position, the beater holder consisted of two opposing parts connected together around the locating device by screw bolts, whereby the angular position of the beater is adjusted by loosening the screw bolts, then turning the beater holder to the desired angular position around the locating device, and then fastening tight the screw bolts again.
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