Machine performs half a day's manual labor in 5 minutes. Washington, D.C., Dec. 22. H.J. Keegan of the U.S. Bureau of Standards, using the spectrophotometer to determine the different colors in a piece of cloth. It formerly took a man a half a day to make this spectrum analysis but now the machine d

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 pr

Color expert for Uncle Sam. Washington, D.C., June 20. When it was discovered that color plays an important role in marketing of cotton, Miss Dorothy Nickerson, Color Technologist of the U.S. Department of Agriculture, developed a method for measuring the color of raw cotton mechanically. The equi

Checks railroad signal glasses for government. Washington, D.C., Sept. 29. Red should be read and orange should be orange and never should the colors in railroad signal glasses be so near alike as to confuse a trainman. The Government, through Mrs. Geraldine W. Haupt, Color Expert of the National Bu

Government discovers method to preserve. (3) Test for fading. D. Levinsky of the Bureau of Standards is pictured exposing a developed film to light from a carbon arc to find whether the photographic image fades. The carbon-arc light simulates daylight closely and therefore is used for many mate

Uncle Sam's color expert. Washington, D.C., Sept. 20. Miss Dorothy Nickerson is one person who can't afford to go color-blind. She is the color analyst of the U.S. Department of Agriculture and measures color as a means of grading and standardizing many agricultural products such as cotton, hay, fru

U.S. conducts tests to improve acidity standards. Washington, D.C. June 16. At the National Bureau of Standards, Dr. Walter J. Hamer is making very accurate electrometric measurements on acidity standards. They are useful in the practical control of many processes such as electroplating, purificat

Testing airplanes lenses used in map making. Washington, D.C., May 6. Dr. F.E. Washer of the U.S. Bureau of Standards testing the lens for the airplane cameras that are used by the Army and Navy. There are lights in the rear of the columnmeters and exposures are made on the photographic plate in fro

Bureau of Standards. Standardization of card colors: Kenneth Kelley judging colors of dyes