CALLING IN A WHISPER

CALL WHISPEROld alarm clocks and many doorbells and telephones emit a signal due to the blows of “hammer” metal hemisphere of the bell.
If you are annoying it’s pretty sharp rattling, stick a bell in place of hitting it square of adhesive tape or medical adhesive tape device will beep “whisper”.

.

Recommend to read

  • A MODEL ROCKET CLASS S6A FROM KARELIAA MODEL ROCKET CLASS S6A FROM KARELIA
    Over the past 3 — 4 years in the lists of winners of major Russian competitions in sport flying are increasingly common names "rocket scientists" of the Republic of Karelia. So, on...
  • ELECTRONIC MANOMETERELECTRONIC MANOMETER
    On the instructions of the enterprises of Dzerzhinsk-khimpromenergo in the design office of the school # 2 of Dzerzhinsk, Gorky region, the guys have designed and built a device for...