4 axis motion
 

Spot on ZFT.

It was a "development" of the old 3 axis system, achieved by mounting the 3 axis motion onto a a pair of "linear bearings" - i.e. a sort of special "railway track" - to simulate Sway (e.g. for engine out at TO, etc). It was the "poor man's alternative" to a full 6 axis motion, (remember, the cost of that sim was MORE than the cost of a ready-to-fly F27 aircraft!), and as you say, the 4 axis never caught on. AFAIK it was a Refdifon-only offering.

Yup, the grey (I prefer the colour "silver" actually, much more "interesting) is definitely rampant in (the small amount) of hair remaining!

Krgds
AES

NIH
 

I think the "NIH" mindset might only have been at Boeing and not America-wide, as our DC-9 fleet had them.
They were so effective that my employer installed them on the glareshield of the 767 and then the A320, 330, 340.
I think the reason this type of checklist was not used on the DC-8, B747 or L-1011 was the presence of the Second Officer who ran a somewhat-similar mechanical checklist( with sliding windows instead of vertically-flipping) from his position.
And they're not on the 777 due to the electronic checklist.

Yes, but if you go to the Smithsonian in DC, they have Rolls Royce engines on display with no mention that they are British. American kit practically has "Made in the USA" stamped all over it by the museum keepers! Perhaps they're jealous. The Harrier and Spitfire get the same treatment, if I remember correctly.

Just sour (Napa Valley?) grapes:)