It works, but it's old and it's a collectible, so I myself wouldn't use it. The Vintage Collectible Alltest Digital Engine Analyzer, model number 3707, is a reliable tool for analyzing engine performance. Made in the United States by Alltest, this digital engine analyzer comes in a case for easy storage and transport. With its sleek design and functionality, this vintage collectible is a must-have for any car enthusiast or mechanic looking to diagnose and improve engine efficiency.
