Original poster: "Arpit Thomas" <neko4-at-dodo-dot-com.au> My bench grinder does 3250 rpm. Perfect for what you are doing. *********** REPLY SEPARATOR *********** On 9/09/2003 at 10:01 PM Tesla list wrote: >Original poster: Beans45601-at-aol-dot-com > >I am looking for, say, plus or minus 200 or 500 rpm. > >-Adam >does the speed have to be exact? if so, to what accuracy?