If you need to drill through wall, out the other side exactly in the right place — use…a compass.
Of course, in collaboration with the magnet, which should be put behind the wall just at the desired point: it will show the compass needle.
Recommend to read
TO SEW THE NETTING
In suburban areas is very often used the fence from the grid-rabitsy. This is no accident: it is durable, aesthetically pleasing look and easy to assemble as comes in rolls. There is...
ORBIT ON “SOYUZ” — “APOLLO”
And again start. The same, now familiar sequence of events. A meeting of the State Commission, which approved the crew. The meeting on the launch pad, the report of astronauts before...
