High-quality black-and-white photographs of large old machines and tools

[Toolmaker51]

Horizontal milling; properly tooled, good at boring too. This particular machine has two spindles, far left of operator, about shoulder height. I'd guess smaller is normal 50 or 60 NMTB taper. The larger could be same taper, yet big spindle; I'd guess for a large facing head.
Before CNC, which is essentially direct, machines used hydraulics commanded by templates, sequential valving controlled by timers and solenoids, cams instead of lead screws, reducing many human factors. Costs incurred making templates, cams, setting up timing or replacing hoses [] were just overhead, incidental compared to value in complicated or numerous parts.

NACA refers to National Advisory Committee for Aeronautics; a United States federal agency founded March 3, 1915, to undertake promote, and institutionalize aeronautical research. I think term Balde Section term is wrong; they had an entire department devoted to wing and blade forms though. . .in advance becoming NASA in 1958.
I had just turned 6.