Just a shot in the dark here. A buddy of mine scored this old air dial gauge and wanted to hook it up to his air system, but we could not work out which hose goes where to make it work with a hand held tire pressure gauge like in the old gas stations. It has 3 connect points, one of which seems to be a filter line.
I tried searching on the net and found a few in the image section, but all were for sale and it seems that this unit does not have a model or part number to ID it. Just wondering since it is made in England whether any of our British members may have an idea...
The Jalopy Journal
