Photopyrometric comparison analyzer at NACA's Lewis Flight Propulsion Laboratory (now Glenn Research Center), c. 1950.

Fullsize image: https://diqn32j8nouaz.cloudfront.net...r_fullsize.jpg



Previously:

1956 NACA metallurgical services worker - photo
1956 NACA wind tunnel wall jacks - photo
1952 NACA heat transfer test section and rig - photo
1956 NACA magnaflux inspection - photo
1951 NACA 20-inch compressor in lathe - photo