Quote from parabellum:
When based in Germany made a special trip to Düsseldorf to buy the Aristo Aviat in the airport shop, best investment ever. Had a choice of slides, high and slow speed and the rotatable cursor on the front was invaluable. When it came to Flight Planning, Plotting and Nav Gen in the exams it saved many valuable minutes. Useful book of instructions and a nice leather case too!
[Unquote]

Yup, that's the one (see my post above). And for those who can't contemplate anything that isn't based on a digital computer, a hands-on mechanical device to represent the 3 vectors is hard to beat.

As we speak, a closely fought eBay battle for a top-of-the-range Aristo slide rule is coming close to its end. Price so far is $112 and rising.

Well, old "Jepp" CR-3 still "made in Huessa" (not yet made in China) still sells new for "25.oo" devalued dollars.
Beautiful item, that Aristo - but my CR-3 will get same answers, even with my marginal 20/20 vision.
With respect for Aristo and leather cases -
xxx
:)
Happy contrails

My CRP5 comes out every flight, much to the amusement of most of my FOs, to do the fuel kg/litres/kg conversion,if nothing else. I have never bought or used an electronic calculator, except for my kids school stuff many years ago.
Dinasour, yes but the battery never runs out.

Yup rubik, the wizzwheels are great for that, actually all unit conversions.

We're still talking about drift sights on the DC-3 (fantastic accuracy) and the old wizz wheels! Takes me back to the old days when we were actually able to fly the plane and not press buttons to keep it going. Anyone remember the autopilot on the DC-3? Not that it needed one.
With all the gizmos now available, I'd still like to see a drift sight on aircraft.