Welcome to the AC-Delco ST-210 Diagnostic Tune-Up Center. This unique piece of equipment was what all the shops and garages used before electronic On Board Diagnostics (OBD) took over. This unit is only good for old cars and trucks with no computers.
A friend gave this to me for free over the weekend. His Dad had bought it from a garage going out of business many years ago. The service manuals that came with this tool went back as early as 1966. While I haven't checked it out too completely, it appears to be a pretty cool tool. As you can see, it's in pretty good shape. It even has a red leather cover to protect the entire top of the unit.
I really like the holster specifically built for the timing gun.
