Super quick and simple instructanble for fun or serious use.
Since my wife and I have started getting out n about a lot more on our bikes the missus has become really interested in the navigation side of things, she wanted a compass mounted on her bike so she could get a feel for the direction of a chosen destination. Handy as I happened to have one in the car, her bike is a shopper or she has her newly pimped trike, I have my Penny Farthing or Unicycle with 29" wheels - the point being, apart from the uni this instructable will allow us to fit our compass to any of our bikes (yours too if you wish).
Step 1: S1 - Stuff
! - Compass as seen in the picture.
1 - length of old bike inner tube that is a snug fit over the end of the compass and about the length of the compass plus a couple of inches (you'll see why)
1 - piece of inner tube about half an inch long.