For those who want to understand aircraft technical drawings. During WW2 different companies (and countries) had different approaches. I do not have any Brit or Axis equivalent manuals on this subject.
To develop a basic understanding of how to read blueprints you must remember that the British and Americans use different datum points for their drawings so first you need to read a reference like
7 Difference Between First Angle And Third Angle Projection - Viva Differences to get a handle on the differences.
For the periods we are looking at the British and Europeans used first angle and Americans and Asians used third angle.
