Poncho: The pictures are proof positive. I will stop by " Trac Auto " this week and look for a comparable unite to fit your design. In regards to your last statement " Bring on the cheap jokes": You will recall that I worked in a biomedical lab back in the late '70 to early '80. Three of us ( Jay , myself and kevin ) used the available laboratory hardware to design what we termed a " MasterBlaster ". We did not patent the design but I think the idea caught on and we can see it today in variations. Imitation is flattery............