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

  • REZINOMOTORNAYA CLASS B-1REZINOMOTORNAYA CLASS B-1
    Rezinomotornaya model aircraft class b-1 designed and built in the aeromodelling circle of the pioneer Chkalovsky district of the city of Sverdlovsk schoolboy Vladimir Ivanov. Speaking...
  • “SHARK”, AND NOT SHOWING TEETH“SHARK”, AND NOT SHOWING TEETH
    Reconnaissance-torpedo bomber Blackburn Shark. In 1933 the air Ministry of great Britain has issued a document S. 15/33, which stipulates the requirements for a new scout-spotter-torpedo...