Westinghouse compressor

[Fretters]

Just having a shift round in the shed, and wondered if anyone might recognise this particular unit, and possibly have any info on it. I've always drawn a blank when I search for info on it.

 

[FrankieD]

Looks to me like it came from a truck,for air brakes.

 

[MagnumForce]

"Brake and Signal" points to a railroad or trucking application