The Vintage Compression Tester and Vacuum Fuel Pump Testers are diagnostic service tools specifically designed for passenger vehicles with gasoline engines. Manufactured by RAC and Montgomery Ward, these units feature multiple measure scales for accurate testing of engine compression and fuel pump performance. Despite being vintage models, they are still capable of providing valuable insights into the health of your vehicle's engine. This product does not come with a warranty, but it is a reliable and essential tool for automotive enthusiasts looking to diagnose and troubleshoot issues with their engine.