System 370 Model 135

The "Mod 135" was on the smaller end of the 370 scale. Not the smallest, but far from the biggest. In case you are wondering, the glass window is a door for a very large (8 inch) floppy disk that was used to load control programs.

A tag inside indicates that it was built in September, 1972.

Final electronics checkout prior to building the oak frame.

Here is the finished project. It's a great reminder of how commercial computing was done in the 1970's.