It looks pretty but it's so low resolution I can barely make out any words. Found a higher res version though (embedded in a PDF, page 7):
https://www.sandia.gov/app/uploads/sites/194/2022/01/GIANTS_...
It's interesting that all lines in the sketch are straight, and circles are perfect, so it seems Whitfield took a ruler and a compass on that plane.
> ruler and compass
Or a circle template (rectangular with holes of different sizes). That would aid drawing the small circles, as well as drawing straight edges and right angles. It can be kept in a notebook like a bookmark.
> It's interesting that all lines in the sketch are straight, and circles are perfect, so it seems Whitfield took a ruler and a compass on that plane.
Imagine trying to board a plane with a compass nowaday :)
On page 12 there's an ad for the cleanroom, and one of the selling points is that it would allow cigarette smoking!