Spindle Speed Measurement

Hi,
I now have my spindle up to speed, by fitting a diferent motor. I have pretty nearly infinitely variable speed, but I have no idea what! I would like a simple electronic rev counter kit, but the auto ones only go up to 9,999 rpm. I am looking for something in the reagion of 25-30,000.
Does anybody have a clue where I could get such a thing on a reasonable budget?
Jas.

Hi Jas
How good are you at kits.
see http://medw.co.uk/wiki/index.php?page=Tachometer for a Tony Jefree tacho
also the original article http://www.jeffree.co.uk/pages/revmaster.htm
worth a read.

peter

This looks good. Tony Jeffree designed the DivisionMaster that I use (and built from a kit!).
Cheers, Jas.