Arkivism
Government expert listens to broadcasts of automobile [...] The Automotive Section of the Bureau of Standards is studying the anti-knock proportion of fuel used in automobile and aircraft engines and the scientist in this photograph is "listening in" to the signals of an engine instead of listening
Public domain

Government expert listens to broadcasts of automobile [...] The Automotive Section of the Bureau of Standards is studying the anti-knock proportion of fuel used in automobile and aircraft engines and the scientist in this photograph is "listening in" to the signals of an engine instead of listening

Harris & Ewing · 1930-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

Subjects
glass negativesunited states
Credit lineGovernment expert listens to broadcasts of automobile [...] The Automotive Section of the Bureau of Standards is studying the anti-knock proportion of fuel used in automobile and aircraft engines and . 1930-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
Open in Explore View at source

Similar works

NO CAPTIONNO CAPTION FactoryFactory Rating gasolines at the Bureau of Standards. Washington, D.C., April 17. F.R. Carter of the U.S. Bureau of Standards is shown adjusting the mixture of gasoline to find out the rating in octane numbers of gasolines. The three carburetor shown in the foreground are each filled with a gasoline tow of wRating gasolines at the Bureau of Standards. Washington, D.C., April 17. F.R. Carter of the U.S. Bureau of Standards is shown adjusting the mixture of gasoline to find out the rating in octane numbers of gasolines. The three carburetor shown in the foreground are each filled with a gasoline tow of w Fighting highway deaths, Wash. D.C. This photograph shows Richard S. Dill, a worker in the U.S. Bureau of Standards, tabulating the efficiency of various kinds of brake linings as the government attempts to determine the best for use on its vehicles. The automobile industry is watching these tests cFighting highway deaths, Wash. D.C. This photograph shows Richard S. Dill, a worker in the U.S. Bureau of Standards, tabulating the efficiency of various kinds of brake linings as the government attempts to determine the best for use on its vehicles. The automobile industry is watching these tests c Army truck manufacture (Dodge). An expert installs the accessories for the engine of Dodge Army trucks that are specified by Army regulations. With skill and accuracy craftsman shown above attaches oil filters, air cleaners, hoops up spark plug wires and sees that all are properly coordinated and inArmy truck manufacture (Dodge). An expert installs the accessories for the engine of Dodge Army trucks that are specified by Army regulations. With skill and accuracy craftsman shown above attaches oil filters, air cleaners, hoops up spark plug wires and sees that all are properly coordinated and in Shenandoah Valley. Braden and Van Fossen Works,a flourishing shop outside of Staunton, which does such heavy work as machining different rock crusher shaftsShenandoah Valley. Braden and Van Fossen Works,a flourishing shop outside of Staunton, which does such heavy work as machining different rock crusher shafts