THE METHOD OF EXCAVATION…

THE METHOD OF EXCAVATION...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

  • IN THE NAME OF SPEEDIN THE NAME OF SPEED
    Middle bomber BB-22 has left its mark in the domestic aviakonstruktorov. About him was legendary. Indeed, this plane was far ahead at the speed of modern bombers, and some fighters. ...
  • TRICYCLE “FRIENDSHIP”TRICYCLE “FRIENDSHIP”
    (The end. Beginning at No. 10, 1973) In the tenth issue of the magazine, readers got acquainted with the General layout of the three-wheeled micro-car, only "Friendship" design...