TY - ART DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: Creative Commons Attribution 4.0 International License TI - Nalcometer Serial No. 1164 ID - 9019s286m AU - Science History Institute DA - 2017/// YR - 2017 M3 - photograph UR - https://digital.sciencehistory.org/works/9019s286m AB - 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. KW - National Aluminate Corporation KW - Nalcometer LA - ER -