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
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
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
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
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
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
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
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
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
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
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

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

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Historic Framed Print, 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., 17-7/8" x 21-7/8"
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Drawn from the Library of Congress archive, this print depicts 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. The Library holds one of the most comprehensive collections of American and international historical prints in the world.

Library of Congress record: Created 1937 June 16 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 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, purification of drinking water, air conditioning, and manufacture of pulp.

Choose the ready-to-hang framed version or the unframed print for custom presentation. A thoughtful gift for anyone who loves history and art. Free shipping on all US orders (domestic 48 states). Snapshot

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