| 摘要 |
The device has an adjustable stop button, and a body (1) comprising a plastic protection plate (3), a foam (7), a micro cell (9), a potentiometer knob (10) and an on-off switch (11). The body is detachably fixed with screws (2). A lateral thrust is exerted against a thrust push rod (5) for wedging a left end of a housing. The potentiometer knob is utilized for volumetric adjustments. The on-off switch is positioned back of the device, and the body is arranged with an upper part. |
