Edmunds Trainer.
Petet,
Good man! - you've cracked it. I ought to be able to say that my rheumy old eyes lit up with instant recognition, but I'm afraid they didn't. Still, it sounds like a Good Idea. My first reaction was: why didn't they use a 1/72 model? - they'd need much less space. And there'd be plenty of Airfix 1/72 models around, wouldn't there? Better check Google, perhaps. Just as well, turns out that there weren't - it was a post-war product. And a big model would stand more knocking about, anyway.
I can see how it would do very well as a range estimation trainer. What I can't quite grasp is the deflection part of the trick. The trolley could be moved at various speeds - how was that taken into account on the "graph"? And you'd need less deflection on a quarter target than on the beam. How about that? Remember, we only had a static (reflected) ring sight.
Better not go on; maybe only displaying my ignorance and forgetfulness. Best
piece of advice on deflection I ever heard came from the famous "Screwball" Beurling: "Estimate the deflection you need - then double it!" (he did all right with that).
My thanks to all who have taken part in the hunt,
Danny.
P.S. I worked alongside a Wing Commander Edmondes in a Special Duty Flight in India in 45. He was an "Armaments Specialist", too. He wasn't my Boss, so I haven't any of his initials in my logbook. Met him again as a S/Ldr at Bomber Command HQ in 49........I wonder.