At roofing ridge site is covered with a special asbestos-cement templates. If not, then you can take advantage of the atomized along the axis of the plastic or steel pipes.
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CALLING IN A WHISPER
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...
CHUCK — NO KEY
A nail and a screwdriver located as shown, will help you out, if in the bustle of work had disappeared the key from the Chuck of the drill and the drill bit must be urgently replaced.
