I purchased this tool at an estate sale...I thought it was pretty unusual. I am having difficulty identifying it? I believe it may be homemade it came in the case as pictured with two gauges I believe are pressure gauges 300 and 1000 psi Brass t-shaped cylinder has fitting for input and 1 gauge at a time. cylinder shaft is threaded and has a leather gasket like an old Coleman stove. No markings that I can find other than the gauges. Any help is appreciated.