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Jay Rich,          Iselin, NJ             4/25/2009

center electrode is 0.047music wire second is insulator tube or coffee stir third is acrylic tube of 3/16 o.d., i.d. is 9/32 then drilled from the bottom at 0.113 for glass tip fourth the glass tip is from fisher scientific natelson blood collecting tubes cat. no: 02-668-10 and fifth the body is a 1/4 o.d and step drilled at the tip to 0.140 sixth the ground strap is from a cap I cut to fit note on ground strap use a hammer to smash the lead end to gently fit the space between the glass and the body of the plug seventh the thread is 10/32


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