This is a large face (3 1/2 ") gauge with a protective surround allowing it to co-exist with other hardware in your tool boxes and drawers. It has a specially designed bleed valve which allows you to take note of pressures, then easily and accurately adjust pressures. This gauge comes with a 17" hose swivel line for flexibility during readings and reads up to a maxmium of 60 PSI. Gauge comes in it's own aluminum case.