For sale, a Late Victorian wall mounted wet and dry bulb thermometer set or hygrometer by Negretti & Zambra, London.
Comprised of a mahogany backboard with brass hanging loop to the top, the board is set with two large brass screws at the top onto which are set two porcelain Fahrenheit thermometer scales measuring from 20 to 120 degrees. To the left-hand side of the scale, both are painted to the makers, Negretti & Zambra, Scientific Instrument Makers, London and
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