Similar
High school Victory Corps. Future airplane mechanics tear planes apart, build them up again in aeronautics class at Washington High School, Los Angeles, California
Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 5/28/37
Miss C.L. Larry testing radium, Bu. of Standards, 8/17/25
Related
Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 5/28/37
Device for testing testers. Washington, D.C., May 25. Herbert L. Whittemore, Chief Justice of the Engineering Mechanics Sections, U.S. Bureau of Standards, has been awarded the Edward Longstreth medal for his work in developing this device for testing the machines which in turn test construction materials. The medal is awarded annually by the Franklin Institute, 5/25/37
Measuring relative humidity by radio. Washington, D.C. June 9. The hair element for measuring relative humidity in radio weather sounding balloons has proved innacurate because of very slow response at the cold temperatures encountered in the upper atmosphere. F.W. Dunmore, Radio Engineer of National Bureau of Standards, has just developed a new device for the U.S.Navy which will overcome this effect and at the same time will not be affected in response by temperature. He is shown in the photograph observing a graph on the recorder being produced by radio signals from an ascending balloon carrying the new device. This is the first record obtained with this new developement and shows a repidity of response much greater than the hair hygrometers Hitherto used. 6/9/37
Tire testing machine. Washington, D.C., May 20. Testing wear and tear on tires with this tire testing machine at the Bureau of Standards is W.D. [?] hold, the machine simulates road tests traveling from 20 to 60 mph, the only difference is that the load on the tires is heavier than the normal weight of cars that the tires are made for [...]
Auto manufacturers confer with Roosevelt. Washington, D.C., Jan. 21. Big shots of the auto industry shown leaving the White House after conferring with President Roosevelt, the group approved the President's credit selling recommendations and forecast as spring upturn in motor sales which should improve business generally. Left to right, front row: K.T. Keller, Chrysler President; Edsel Ford; Sen. Prentiss M. Brown of Mich, who arranged the meeting; William S. Knudsen, President of General Motors; and A.E. Duncan, President of Comm. Credit. Co., 12138
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 to a radio broadcasting station. Eventually, these studies may evolve a new engine, one that will use fuel more economically and efficiently
Uncle Sam test brass alloys. Washington D.C. To determine the correct amount of alloys necessary for desired results in the making of castings and other uses, the U.S. Bureau of Standards is conducting daily tests. 600 different portions of the alloy are used at the present time. The tests are made with brass bars which are melted in a high frequency induction furnace and the temperatures are recorded before and during the pouring into the molds. In the photograph, left to right: H.V. Gardner, Lemuel D. Jones, and C.N. Saeger, Chief of the Experimental Foundry at the Bureau
Conversion. Automobiles to 40 mm. anti-aircraft guns. 40 mm. anti-aircraft gun barrels for the U.S. Army are machined and finished in a former automobile plant. First they are cut to size and then their centers located. After that, they go down long machining lines where they are finished by mass production methods. Never before has any manufacturer attempted to make gun barrels of this size on a mass production basis. Chrysler Corporation, Highland Park, Detroit
Conservation. Glass gauges replacing steel. A glass ring gauge for the inspection of fuse parts. These gauges are replacing steel gauges at the Frankford Arsenal. Glass gauges are lighter and cheaper than steel, permit greater visibility in inspection, are not as much affected by room temperatures and heat of operators' hands, are not corroded by perspiration, need no protection against rusting, do not acquire burrs that would change the effective sizes. They can save the annual use of 250 tons of critical tool steel in government arsenals alone
Interferometer tests standard gages for automobile manufacturers. Washington, D.C. May 28. I.J. Fullmer of the Bureau of Standards is shown with an interferometer by means of which differences in length are measured in terms of wave-lengths of light to the millionth of an inch. A four-inch square precision gage is being compared for length with the Bureau's standard 4 inch, which is rectangular in shape. These gages are tested against the master gages which the different auto manufacturers check their measuring devices so that the parts of the cars separately made can be, when assembled, fitted perfectly. The standard gage and the master gage are shwon being compared in the interferometer, 52837
Summary
A man in a tie is looking through a microscope, Library of Congress Harris and Ewing collection
Title from unverified caption data received with the Harris & Ewing Collection.
Gift; Harris & Ewing, Inc. 1955.
General information about the Harris & Ewing Collection is available at http://hdl.loc.gov/loc.pnp/pp.hec
Temp. note: Batch four.
The Harris & Ewing, Inc. Collection of photographic negatives includes glass and film negatives taken by Harris & Ewing, Inc., which provide excellent coverage of Washington people, events, and architecture, during the period 1905-1945. Harris & Ewing, Inc., gave its collection of negatives to the Library in 1955. The Library retained about 50,000 news photographs and 20,000 studio portraits of notable people. Approximately 28,000 negatives have been processed and are available online. (About 42,000 negatives still need to be indexed.)
Nothing Found.
Tags
district of columbia
washington dc
glass negatives
harris and ewing collection
harris and ewing
photo
gages
master gages
interferometer
square precision gage
length
inch
ultra high resolution
high resolution
car
automobile
united states history
library of congress
Date
01/01/1937
in collections
Location
district of columbia
Source
Library of Congress
Link
Copyright info
No known restrictions on publication. For more information, see Harris & Ewing Photographs - Rights and Restrictions Information http://www.loc.gov/rr/print/res/140_harr.html