Here is a Vintage Allstate Combustion Pressure Tester Gauge / Meter - Old Service Station Tool.  I really have no way of testing this gauge but It looks to be in good used condition with the main flaw being some mild surface scratches on the glass lens and some crazing on the faceplate at the bottom center (mild).  It will also make a great addition to a vintage gas and oil display collection.  Please check out the pictures and email us with questions before bidding.  Professional packaging guaranteed (see our feedback).  Bid with confidence and good luck.

Check out our auctions and other items on eBay in "The Old Car Parts Store" for many similar items.