Investigation of Damping Liquids for Aircraft Instruments : II
This is a 1932 technical report from the NACA series, produced by the aeronautical research establishment for engineers designing aircraft instruments, and held in the NASA Technical Reports Server. The pictures are line graphs plotting log viscosity ratio against temperature for mixtures of glycerine, ethylene glycol, xylene, mineral oil and other liquids, each curve labelled A to E by percentage concentration. A designer might take from them the clean, labelled graph style, with fine dashed curves fanning out from a shared origin and a tabulated key set beside them.
