Help decode Russian spec

[graham-xrf]

@Lo-Fi :
Hi there. You got this trick to work in a way that just does not happen for me. Is it OK to ask for another shot at one image?
Many thanks if you can help.

 

[Lo-Fi]

Of course

 

[graham-xrf]

Of course

Many thanks pal! This is much appreciated.

 

[graham-xrf]

@Lo-Fi : Hee Hee - I do like it when it says "Area of maximum spectral feeling"!

The word "sensitivity" did make it in there, but this is because of Google's context driven, crown supplied translations, with no direct dictionary lookup.
In translations, especially from Chinese manuals, seeing stuff like the maximum speed of a mill described as "passionate RPM" always has me in a grin.