Produced by Rocketdyne, a division of North American Aviation, the J-2 rocket engine was the workhorse behind the S-IVB stage of the Saturn V launch vehicle in the Apollo program.
When I was a boy, I was always entranced by the intricate model of the J-2 that lay in my grandpa's study. When I was 10, he gave it to me as a birthday present, and along with it came a technical fact sheet. I've scanned this fact sheet and made it available here online.
In addition, at the request of a fan, I've taken some “orthographic” pictures.
The diameter of the engine bell is eight inches, and the height of the model is fourteen inches. The diameter of the base stand is one foot.
Questions or comments? Feel free to drop me a line.