The British magazine “Practical Householder” reminds readers about the DS one the oldest methods-plan sections using the so-called Egyptian triangle with sides in the ratio 3:4:5. If you make a triangle out of durable nylon twine, combining stretches it with a metal SANB, we will get a reliable and accurate tool for marking angles.
Recommend to read
SMALL, BUT PERFECTLY FORMED
Multi-purpose fighter F-5E. After the Second world war, the US claimed, not without reason, on the role of world leader, particularly in aviation. The leadership was obliged to provide...
ARTILLERY TANK FOR THE RED ARMY
In July 1929 the revolutionary military Council of the USSR adopted the "System of tank-, tractor-, car-, breeveertien the red army" laid for the coming years program to create armored...
