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Conservation. Glass gauges replacing steel. Markings on the handles of the new glass gauges, which replace steel gauges in the Frankford Arsenal, are produced by acid etching as shown on the attached labels. Glass gauges are lighter and cheaper than steel, permit greater visibility in inspection, ar
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Conservation. Glass gauges replacing steel. Markings on the handles of the new glass gauges, which replace steel gauges in the Frankford Arsenal, are produced by acid etching as shown on the attached labels. Glass gauges are lighter and cheaper than steel, permit greater visibility in inspection, ar

United States. Office Of War Information, Palmer, Alfred T. · 1943-01-01 · photo, print, drawing

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

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pennsylvaniaphiladelphia countysafety film negativesphiladelphiaunited states
Credit lineConservation. Glass gauges replacing steel. Markings on the handles of the new glass gauges, which replace steel gauges in the Frankford Arsenal, are produced by acid etching as shown on the attached . 1943-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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