Vintage Hastings Pistol Grip Steel Vent Compression Tester Gauge Sets The Pace. 0-200 PSi. I believe this item was made in the 1950's or sometime around then. I believe it needs a new end where the black rubber piece connects on it. There are 2 black rubber pieces in the compartment where the bottom unscrews. If you are not satified, I offer a free 30-day return policy.