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 ADVENTURES OF THE “ITALIAN” IN RUSSIA
Mass Soviet car VAZ-2101. In the early postwar years the car fleet in the country has increased dramatically this occurred both at the expense of production of cars "Moskvich-400" and...
ATTIC WITH COMFORT
In a wooden house, the attic is always somehow seems low, dark and cluttered room. And if a little dream and to imagine him as he is shown in our drawings? Look, another one, and maybe...