Part of PICRYL.com. Not developed or endorsed by the Library of Congress

american memory

boston

dr h s perkins

music for the nation american sheet music ca 1870 1885

notated music

performing arts

sheet music

indicator

public
30 media by topic ∙ page 1 of 1
Radio inspectors now on the job. Watch out for the ------ Radio inspectors will get you! Broadcasting stations that do not keep on their own wave LE may expect to receive a hurry call from a person resembling a physician with a medical case---In fact, however, he is RA Inspector with a portable frequency indicator. This device designed by the Radio Laboratory of the Bureau of Standards

Radio inspectors now on the job. Watch out for the ------ Radio inspec...

A black and white photo of a man in a suit and tie. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Rochester, New York. Madison E. Butler, assistant chief inspector for the Stromberg-Carlson Telephone Manufacturing Company, who developed a visual-lamp indicator to test field telephone switchboards and which the U.S. Army Signal Corps claims has saved the equivalent of almost thirty-seven years work, shown at his testing instrument. He received one of the first five "Citations of Individual Production Merit" for his idea which has an outstanding effect on the entire war effort

Rochester, New York. Madison E. Butler, assistant chief inspector for ...

Public domain photograph of the 1930s-1940s World War Two, armed forces, military production, no copyright restrictions image - Picryl description

New fathometer used at full speed. Washington, D.C., May 7. Dr. Herbert Grove Dorsey of the U.S. Coast and Geodetic Survey has invented an instrument to secure the precise measurement. The machine sends a sound, pitched so high that it is above audibility, traveling thru the water a known speed, the sound hits the bottom and returns as an echo at 20 times per second. The fathometer is so accurate that a change in depth of three inches can be detected. the indications are made by a flash from a neon tube, viewed thru a rotating disc, the flash of light appearing to stand still and the depth is read as easily as a clock. The instrument indicator is installed in the pilot house (at the top of the machine) and the transceiver (the disc at the right of the machine [?]) is located in the hull of the ship, 5/7/1937

New fathometer used at full speed. Washington, D.C., May 7. Dr. Herber...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Western Electric altimeter: The dipole receiving antenna used in connection with the Western Electric terrain clearance indicator is the result of intensive development research by the Bell Laboratories

Western Electric altimeter: The dipole receiving antenna used in conne...

Picryl description: Public domain image of a military aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard motor car company. Checking flatness of tab washer with a dial indicator and fixture

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard moto...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Yucca plants, a.k.a. "ghost plants," an indicator of a former settlement on Lillybrook Mountain.

Yucca plants, a.k.a. "ghost plants," an indicator of a former settleme...

Event: Molly mooching on Lillybrook Mountain. Public domain photograph - historical image of West Virginia, United States, free to use, no copyright restrictions image - Picryl description

Women in industry. Aircraft motor workers. Scarlet fingernails give emphasis to the important work that feminine fingers are doing on this inspection line. Performing a delicate and repetitive job, women at this Midwest aircraft motor plant use dial indicator gauges in the process of inspection of ball sockets used in airplane motors

Women in industry. Aircraft motor workers. Scarlet fingernails give em...

Picryl description: Public domain image of a woman working, women labor, 1940s, economic conditions, home front, world war two, free to use, no copyright restrictions.

Indicator of drilling operations, oil well, Kilgore, Texas

Indicator of drilling operations, oil well, Kilgore, Texas

Public domain photograph - historical image of Texas, United States, free to use, no copyright restrictions image - Picryl description

Citations of individual production merit awarded. The first five Citations of Individual Production Merit have been awarded to five war workers, War Production Drive Headquarters has announced. The citation is the highest honor conferred for individual achievement. It is granted only for ideas or suggestions that have an outstanding effect on the entire war effort. Joseph H. Kautsky, Indianapolis, Indiana, an employee of the Lin-Belt Co., was awarded his citation for four suggestions, each technical. He suggested a grinding wheel adapter, which permits higher speeds in internal grindings; a simplification cutting down the number of special internal grinding spindle wheel adapters from twelve to three; the adoption of a precision screw adjustment to the vertical column of dial indicator guages, to get faster adjustments without danger to the dials; and a new method of testing the concentricity of internally ground parts. The picture shows Mr. Kautsky (center) being congratulated by formean Bill Whitaker (right) as Superintendant R. E. Whitney (left) looks on

Citations of individual production merit awarded. The first five Citat...

Public domain photograph of 1930s America, free to use, no copyright restrictions image - Picryl description

Keeping his eyes on the wheel. Turning an indicator on one of the big machines at a large Army arsenal working around the clock for war needs

Keeping his eyes on the wheel. Turning an indicator on one of the big ...

Picryl description: Public domain image of an industrial building, factory, workshop, workers, 19th-20th century, free to use, no copyright restrictions.

Steam indicator diargams, engine of Committee Room fan, north wing

Steam indicator diargams, engine of Committee Room fan, north wing

U.S. Capitol (drawing). This record contains unverified data from caption card.

Indicator department, National Cash Register [Company], Dayton, O[hio]

Indicator department, National Cash Register [Company], Dayton, O[hio]

Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Selected indicator # 9, aging persons 65 and over per 100 adults 18 to 64 for 2206 enumeration districts : [Washington D.C. metropolitan area] /

Selected indicator # 9, aging persons 65 and over per 100 adults 18 to...

Public domain scan of a vintage map, city plan, atlas, cartoghraphy, free to use, no copyright restrictions - Picryl description.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking bushings by means of a shadow graph and an indicator

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Moto...

Public domain photograph - working class people, the 1930s United States, work, labor, worker, free to use, no copyright restrictions image - Picryl description

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)

Specimen pages from the song indicator

Specimen pages from the song indicator

From: Music Copyright Deposits, 1870-1885 (Microfilm M 3500) Also available through the Library of Congress Web Site as facsimile page images. (additional physical form)