19N705 up for sale is a new old stock US gauge pressure and vacuum gage this gage has a face that is 2 1/2 diameter the needle extends behond this face a bit , the outer casing is 3 5/8 and has a open face , this outer case has some minor light rust and oxidation , from storage this is a new gage from old stock , we believe this was used on some type of automotive test equipment this has a small tubing input at the bottom that has a outer diameter of 0.218 just under 1/4 and inner diameter of 0.073 inches  comes as shown in the photos.  box is marked 2590-1 note all the gauges only have one screw in the back cover as from the factory , we removed one screw to show the inner workings of the gauge , this area is open in the back when the gauge is removed from the metal surrond , nice gages  some boxes have number 122386 written on them ,