Vertical Tube Furnaces never die!
Quoting Dr. Nielsen,
“I sort of lost track of which old controller went where. Your info confirmed what I suspected. It is a unit I purchased when I was a grad student at SMU. I took it with me to Maryland in 82, then Oregon State in 88 and here in 18. Results have been published in over 40 papers with over 5000 citations. I think that is the definition of a “workhorse”. Oh and over 20 student theses.”