Auction: Clocks, Watches & Scientific Instruments - 2555MLocation: MarlboroughDate / Time: July 16, 2011 10:00AM
Description:
Wet-Dry Bulb Hygrometer by Huddleston, Boston, early 20th century, the mahogany case with wed and dry thermometer, the wet scale marked with maker's name, the dry marked Hygrophant, center revolving scale to percent relative humidity, ht. 13 1/2 in.
Estimate $100-150