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Granville phillips automatic pressure controller,vacuum
Granville Phillips Automatic Pressure Controller
For sale- a Granville Phillips Automatic Pressure Controller. I assume it would be use to control a vacuum pump or related system. This is an older device using vacuum tubes. Powers up but is otherwise untested. The AC connection is an older style that some extension cords will fit onto. AC cord is NOT included, nor are any other cables or manuals. Just what you see in the pictures. Looks like it is model 01 (!), serial number 376.
