Old 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
THE “STEPCHILD” OF THE FLEETS OF HITLER AND MUSSOLINI
European Nazi Empire, Germany and Italy, showed a coincidence of interests on many issues. Was no exception and the construction of a naval fleet. Both the "leader" — Hitler and...
HOW to MAKE a GUY
for the fifth year I subscribe to your magazine and I like it very much. It is always possible to choose good advice, interesting drawing. I am engaged in ship modeling circle at the...
