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
CATAMARAN “FRIZY”
By the time of writing these lines, I had built five catamarans of various designs. My friend Anatoly Pavlovich Ignatchenko took an active part in the design, construction and testing of...
AVTOKRANA
Amateur constructors of boats, yachts, cars often face the problem: how to get the curve on the big plane? Enough to install on a building berth vertical panel, the edges of which drive...
