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.
|Place of manufacture|
|Original file type||TIFF|
|Rights||Public Domain Mark 1.0|
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