Allan, those pictures are the best yet, exactly what I need. Even details like the chains retaining the pins on the antivibration mounts are there - I'd never seen them before, nor had I seen the two drawers to the left of the desk. Superb pictures!
With these and all the information from other forum members I can proceed with considerably more confidence. All I have to do now is source an A1134 Intercom amplifier, crystal checker, etc, etc etc.
I'm so pleased that I came on this forum as the members are so friendly and helpful.
I'm not finished yet, so if any more info comes to light it will be gratefully received.
Many thanks - Michael.