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
NO WORSE THAN GROVER
The familiar metal lids from bottles will serve no worse than the famous springy washers. Grover thanks to its ribbed "skirt" that will prevent accidental removing of the screws in the...
The builder’s “barrel factory”
Owners of private houses or dachas often face the need to prepare concrete solutions. Mixing water, gravel, and cement in a certain proportion is not difficult, but very labor-intensive,...
