Old industrial vintage panel mounting AC volt meter with a black bakelite case. This meter is marked as model University and is made by Sensitive Research Instrument Corporation - 4545 Bronx Blvd, New York City. It has a selector marked for 15, 30, 75, 150 volts
There are two terminal posts with bakelite knobs on the back.
This vintage volt meter work well. We tested it on the 150 volt setting and regular 110 volt household alternating current.