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
RIDE-ALL-TRADES
Garden cart with a wide, roomy basket and grates to build sides for a variety of work in the garden, on the plot. However, every one dealing with the earth, primarily digging, is engaged...
BIKE TRAINER
The domestic industry for many years produced mopeds and motorbikes with engines of the type "D". However, all of these machines were a significant disadvantage (which was, however, pay...
