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
THE JET SYSTEM OF VOLLEY FIRE “GRAD”
During the great Patriotic war of the Soviet rocket artillery has proved itself as a powerful weapon on the battlefield. Then the front got more than 10 thousand multiply launchers...
DISGRACED LINER
The first post-war years were marked by the aircraft industry in the rapid development of jet technology. To increase the thrust of gas turbine engines, their efficiency and, most...
