For your consideration is a vitnage Penske 244.2114 Engine Vacuum Negative Pressure Tester Tool gauge, as shown in the photos. I applied negative pressure / vacuum to it and it does work. It measures 3 5/8 inches in diameter and 1 1/8 inches deep. PLEASE NOTE that the tubing that it comes with is rather stiff and may need to be replaced. This is a nice quality vintage gauge. Thank you for your interest.
