Yes, like bob says, the plastic boc on the vertical pipe is the pressure switch. Also, the tube from the compressor to the dryer has cooling fins, so this thing makes at least somewhat decent pressure, else there would be no need to cool anything. The tank seems reasonly beefy also, it's not a #6 soup can. Betya it will make enough pressure to fill a tire, and from the head size, faster than those little cheesy Bennys special tire fillers. Not gonna run a paint gun or an impact wrench tho.
I would ebay it for $150 and see what happens tho ;P
There may just be some radio fellow looking for one....