Watching "Moon Machines" on SCI channel just now, about the development of the Saturn V rocket. About 18 minutes in there is an engineer using a slide rule. There was a close-up, but so blurry that I couldn't read the scales. Definitely a Pickett, white, 4 screw cursor, metal end bars with the narrow cursor window, rounded stator braces, I think. I froze the picture, and best I could guess from the general scale configuration it looked like an 800T, Log Log Synchro Scale.

Steve Treadwell