The Vintage Stewart Warner SW Vacuum Gauge 0 - 30 is an 8-inch diameter analog vacuum gauge made of metal. It includes mounting hardware and has a vintage style, making it a unique addition to any car or truck interior. This Stewart Warner gauge is a performance part with universal fitment, ensuring it can be easily installed in a variety of vehicles for accurate vacuum readings. With its classic design and reliable functionality, this gauge is a must-have for car enthusiasts looking to add a touch of nostalgia to their vehicle.