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Close-up of Jim Dowling holding a micrometer.

Close-up of Jim Dowling holding a micrometer.

Forms part of a group of images recorded on August 17, documenting scenes at Watson Machine International, 74 Railroad Avenue, Paterson, New Jersey.

A skilled machinist on a turret lathe in North America's machine shop tests the accuracy of his work with a micrometer

A skilled machinist on a turret lathe in North America's machine shop ...

Picryl description: Public domain photograph of a machine, worker, factory, industrial equipment, free to use, no copyright restrictions.

Close-up of Jim Dowling holding a micrometer.

Close-up of Jim Dowling holding a micrometer.

Forms part of a group of images recorded on August 17, documenting scenes at Watson Machine International, 74 Railroad Avenue, Paterson, New Jersey.

No margin for error here. Micrometer readings are taken to make sure that every part fits perfectly in the guns being manufactured for war purposes. This worker is inspecting a breech ring for medium-caliber guns in a large eastern arsenal

No margin for error here. Micrometer readings are taken to make sure t...

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

Close-up of Jim Dowling holding a micrometer.

Close-up of Jim Dowling holding a micrometer.

Forms part of a group of images recorded on August 17, documenting scenes at Watson Machine International, 74 Railroad Avenue, Paterson, New Jersey.

Conversion. Merry-go-round plant. In times of peace, this horizontal bulldozer was used to fashion parts for merry-go-rounds to lighten the hearts of carefree children. The drill press has now been converted so that it can perform a face milling operation on landing gear cases for Airacobras. Mathew Kipa, expert machinist, uses a depth micrometer to check the accuracy of his work. Spillman Engineering Company, North Tonawanda, New York

Conversion. Merry-go-round plant. In times of peace, this horizontal b...

Picryl description: Public domain image of an industrial equipment, workshop, assembly line, factory, power engine, 19th-20th century, free to use, no copyright restrictions.

Close-up of Jim Dowling holding a micrometer.

Close-up of Jim Dowling holding a micrometer.

Forms part of a group of images recorded on August 17, documenting scenes at Watson Machine International, 74 Railroad Avenue, Paterson, New Jersey.

New York, New York. Class in the use of precision instruments, part of the government-sponsored industrial training program at New York University. Most of the students are women. Checking the outside diameter of a cast iron face cam to the nearest thousandth of an inch with a five to six inch micrometer caliper

New York, New York. Class in the use of precision instruments, part of...

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

Large micrometer on workbench in lathe area at Watson.

Large micrometer on workbench in lathe area at Watson.

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 5, 1994.

Tennessee Valley Authority. Watts Bar Dam hydroelectric plant. Making a micrometer adjustment for line of sight on a transit at TVA's Watts Bar steam plant. This plant will supplement the big hydroelectric installations at Watts Bar Dam, which has an authorized output of 90,000 kilowatts, and a possible ultimate of 150,000 kilowatts. Each of the four big turbo-generators in the steam plant is rated at 60,000 kilowatts

Tennessee Valley Authority. Watts Bar Dam hydroelectric plant. Making ...

Picryl description: Public domain image of a hydroelectric dam, industrial facility, power generation, water cascade, free to use, no copyright restrictions.

Close-up of Jim Dowling holding a micrometer.

Close-up of Jim Dowling holding a micrometer.

Forms part of a group of images recorded on August 17, documenting scenes at Watson Machine International, 74 Railroad Avenue, Paterson, New Jersey.

Conversion. Copper and brass processing. Gaging drawn brass bar. Brass or copper supplied in bars finds many uses in the Navy. Most frequently it is cut to short lengths and machined to form parts of machinery, guns, and other implements of war. While dimensions are apt to vary, even slightly, close tolerances as to width and thickness must be observed. Here an inspector is checking dimensions with a micrometer. Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Gaging drawn brass bar. Brass...

Public domain photograph related to Great Depression, free to use, no copyright restrictions image - Picryl description

Large micrometer on Jan Sudol's workbench.

Large micrometer on Jan Sudol's workbench.

Forms part of a group of images documenting the daily work activities of people at Watson Machine International, a machine tool manufacturing company located at 74 Railroad Avenue, Paterson, NJ, on August 6, 1994.

Oil burners to machine gun parts. Using a micrometer to check this small part for an army machine gun, this worker must achieve tolerance not greater than 1/10,000 of an inch. This upper New York state factory, which formerly produced oil burners, is under contract for 75,000 small precision parts for the Army. Its employees are super-skilled workmen, many of whom have been with the firm for decades. Reif-Rexoil Company, Buffalo, New York

Oil burners to machine gun parts. Using a micrometer to check this sma...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Conversion. Merry-go-round plant. These hands and this machine used to fashion parts for merry-go-rounds to lighten the hearts of carefree children. The drill press has now been converted so that it can perform a face milling operation on landing gear cases for Airacrobras. Mathew Kipa, expert machinist, uses a depth micrometer to check the accuracy of his work. Spillman Engineering Company, North Tonawanda, New York

Conversion. Merry-go-round plant. These hands and this machine used to...

Picryl description: Public domain image of a child labor, factory, plant, manufacture, industrial facility, early 20th-century industrial architecture, free to use, no copyright restrictions.

Detroit, Michigan. Assembly of Rolls Royce engines at the Packard motor car company. Inspecting the retaining nut dimensionally with a micrometer

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

Conversion. Copper and brass processing. Drawing seamless copper tube. Rough cast tubes tapered at one end to fit through a die are gripped in the tongs of the electric motor-driven vehicle on the drawbench and pulled or "drawn" through the die to reduce them to the desired size. Tubes usually are redrawn many times; each successive "draw" reduces the diameter, and increases the length. Brass tubes need to be annealed or softened between each draw, but copper tubes can be drawn several times without intermediate annealing. The tapered nose of the tubes may be seen just behind the drawbench operator. The tube is checked with a micrometer after being drawn, to make sure it is the right diameter. The man looking through the short section of tube is inspecting the inner surface for flaws. The Chase Copper and Brass Company, Euclid, Ohio

Conversion. Copper and brass processing. Drawing seamless copper tube....

Public domain photograph of car garage, repair shop, 20th century, free to use, no copyright restrictions image - Picryl description