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Precise measurements. Washington, D.C. June 17. W.H. Goss, of the National Bureau of Standards, is shown making very precise measurements of the electrical conductance of standard solutions, which are the basis of industrial control of boiled water, steam condensates, beet sugar refining, metal cleaning baths, and of various other technical operations. 6/17/37

Precise measurements. Washington, D.C. June 17. W.H. Goss, of the Nati...

Public domain photograph, 1910s-1920s portrait, American, free to use, no copyright restrictions image - Picryl description