On Apr 10, 3:55 pm, Mxsmanic wrote:
d&tm writes:
Personally I do most of my flight planning in Excel. but if I havent got a
computer with me, I always have a calculator in my flight bag.

I guess nobody uses slide rules any more.

There are still plenty of slide rules made for pilots, printers,
doctors, and so forth. Dozens of makers of them, including:

http://www.concise.co.jp/eng0731/slide.html
http://iwa-slidecharts.com/en/
http://www.perrygraf.com/products.html
etc..

And a whole bunch of us active slide rule users live at:

http://tech.groups.yahoo.com/group/sliderule/

I, for example, design manual flight computers as a hobby for myself,
using SVG to generate the graphics. I also researched and posted the
E-6B's history on Wikipedia, and have written a couple hundred pages
towards a book on the history of all flight whizwheels.

Kev