| 摘要 |
Timer device with acoustic signal of the "Ping" type, comprising a box 12, a timer 24 inside a first volume 22 of the box, a cam 28, inside a second volume 26 of the box, actuated by a shaft 18 emerging from the timer; characterised in that it comprises a bell 40; at least one first blade 29 inside the said second volume, collaborating with the said cam 28, the said blade 29 carrying a small hammer 33 for collaborating with the said bell. <IMAGE>
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