Back when I was working on ion accelerators in the lab, we never had enough of these around. It’ll probably be a problem until we finally switch to the metric system altogether. KaleCo, the company that sells them, mostly supplies car tools, parts and accessories. They point out that the screwdriver is perfect for “loosening screws on the right side of the vehicle, or tightening screws on the left side of the vehicle.”
Another item that would come in handy for all those seemingly never-ending experiments would have been a few of these round tuits. 
I can’t tell you how many technicians have told me they would finish a job if they could only get one. I had no idea they cost $125.99 (plus shipping)! Maybe that’s why they were so hard to find.
-Buzz