Through some contacts at the RAF Museum and a couple of private collections, I was able to get scans from the chapters of AP1730 covering the Course Setting Bomb Sight. This proved very useful! Unfortunately they do not cover the Mk. X, because it was already removed from use when this was published. The Museum did donate a rather good image of the Mk. X, however, and I’ve put the article up. Just google up “Course Setting Bomb Sight”, the Wiki article should be in the first 5 links somewhere.

I’ve moved on to the Mk. XIV now. This takes up almost 100 pages of the AP1730, so I suspect the entire book must be enormous!

If you do ever make it to Wellington and scan this, my hat is off to you in advance, sir!