There is a small chance someone at Nicolet may remember this Tracor/Northern was in Middleton, very near by. I don't remember if this was the origin of their DSO line http://www.theoscilloscopeshop.com/nicolet-oscilloscopes.html On 1/26/17 11:07 PM, Josh Dersch wrote: > http://yahozna.dyndns.org/scratch/ns600