This unit is UNTESTED. Comes with power cord and leads, as shown. Sold AS-IS. This is a vintage Knight Model KG-375A Universal Auto Analyzer designed for use with cars and trucks. It is an analog engine analyzer that measures various parameters to diagnose issues with the vehicle's engine. The unit is sold as-is with no warranty and has not been tested. It was manufactured in the United States and is a unit type product with a unit quantity of one.