whist looking online for conversion tables from inches to degree's to minutes etc, I came across this little beauty. Very very informative.
BTW - If your approximately 10 year old bmw mini cooper s needs a track rod end doing, let someone else do it.
http://www.crypton.co.za/Tto%20know/...Simplified.pdf
I know I posted this up a moment ago, but this my be a bit easier to find in future years.