Genghis
I'm fortunate I got you on a good day ! Apologies if I caused any upset, not the intention.
On the wizzy wheel calcs, as I said to chipmeisterc, my point was pertaining to the reverse-side of the wizzy wheel. I hadn't used that for decades (calculating temperature corrections for use in IAS to TAS etc). Of course, not difficult in principle, but awkward in practice if you've simply forgotten how to use that arcane device (such as I had, not expecting to have to use it again).
Seriously, do you know of any private pilot uses the wizzy wheel to make these corrections every time they plan a VFR flight ? Or even use a wizzy wheel at all ? I can tell you that I *never* use that device. I don't even carry one on-board. I always use software for those tasks. If you use your wizzy wheel for temperature corrections, I am very impressed. I guess it goes to prove that there are still some people out there who know how to use a slide rule...I'ts similar to the point about navigation itself. I don't know of any private pilot who doesn't use GPS "and follow the pink line" as their primary nav technique instead of map and compass, even though they are meant use map and compass as primary, and GPS as backup, everyone does the opposite as far as I can tell...If you do the proper map and compass way as primary, again, I must say I would be impressed: respect.