hey you guys i saw this tach on this site for computers but what rpm's does it mesure..the cpu or something oh hardrive????..... http://www.directron.com/tachometer.html

Im not sure but that is somewhat expensive for that thing.

ya but that pretty cool i wuld do it

not a 100% sure but i think you can set it to what you want it to do. like cpu case fans etc.

i would want it on my harddrive so i no when its full out 7200 rpm's or just idle u no...ya that wouls be sweet. oh ya i gazve blood 2 day...woot woot....got all this free cookies and water and juice it was rad.