United Electric Controls Type 36 Model 364 Adjustable Pressure Switch

This item was purchased from a large business inventory reduction sale. I do not know the history of it. It is also labeled, "Range 0-500 PSI, 15 Amps, 125/250 AC". It actually looks like it might be new with a lot of shelf wear. It does not have any marks on the mounting tabs. I am not able to test it. It only comes with what is shown in the pictures.

S551-4 d