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Scientific apparatus and instruments

Nalcometer Serial No. 1164

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Wooden box with metal instrument inside; instructions attached to top of box; instrument has a gauge and three turnable knobs; space along side has a power source and an electrode that is used for measuring; plaque on top left corner identifies instrument, maker, and serial number.

A Nalcometer is used to measure the total amount of dissolved solids in water.

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Place of manufacture
Format
Genre
Medium
Extent
  • 3.875 in. H x 6.375 in. W x 10.75 in. L
Inscription
  • (Plaque on top left corner) "NALCOMETER / TRADE MARK REG U.S. PAT. OFF. / FOR DETERMINATION OF TOTAL DISSOLVED SOLIDS IN BOILER WATER / MFD EXCLUSIVELY FOR / NATIONAL ALUMINATE CORPORATION / CHICAGO, ILL. / VOLTS 110 A.C. CYCLES 25-60 / SERIAL NO."
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Rights Creative Commons Attribution 4.0 International License
Credit line
  • Courtesy of Science History Institute

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Science History Institute. Nalcometer Serial No. 1164. Photograph, 2017. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/9019s286m.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.