Mohamad,

Put a reed switch in the speedometer next to the rotating magnet, then
count the
pulses.  I'm sure that you can figure out the mechanics.

CarlDW

On Sun, 5 Jan 1997 15:30:51 +0300 Mohamad Shalan <shar@SHAMS.EUN.EG>
writes:
>Hi
>I am searching for automotive speed transducer. ANy pointers
>
>Thanx
>