I got a new toy...well not a toy yet, I don’t have the input cables. Right now it’s just something to look at while it is collecting dust. My son was doing an electrical job at a storage unit and saw this sitting in the parking lot and got talking to the guy who bought the unclaimed storage. He gave the guy $5 and they threw it in the back of the truck. Even came with the cart, an 89 page operation/service manual and 90 page assembly manual. It is a Heathkit 12” Solid-State Ignition Analyzer Model CO-2500. The date on the manual says copyright 1975.