The Vintage Sears Engine Analyzer 28-21423 (161.214230) is a classic tool designed for diagnosing engine issues in passenger vehicles. Made in the United States, this analog display analyzer comes with a user guide, clamps, and is housed in its original box. With no warranty, this trustworthy brand product helps you troubleshoot and analyze your vehicle's engine performance with ease. Perfect for automotive enthusiasts and mechanics looking for a reliable and retro diagnostic service tool.