Thanks, plane. Interesting story. Film. Slide rules. Amazing my grandchildren will be asking me, what was film, Gramps? What were slide rules? I think even my KIDS don't know what slide rules are. Or log tables. Wish I'd have kept my last slide rule. They looked so neat and "scientific." I had log tables, but they were in the basement and got mouldy so I threw them out.
Wonder if the Russkis had their own Hexagons?