Grouping of three (3) barometers and one (1) Thermal Control thermostat. 1st-3rd items: Three (3) brass ship barometers, including two holosteric barometers by Pertuis, Hulot, Bourgeois & Naudet, marked "PHBN" en verso, one also having a fahrenheit thermometer on lower half; one barometer unmarked, with two pegs on lower half for standing. Range from 5 1/4" dia to 6 3/4" dia. 4th item: General Electric Thermal Control thermostat with clock, featuring two wheels to either side of the thermostat for separate day and night temperature settings. 8 1/4" H x 4" W x 3" D. All items early 20th century. CONDITION: Items not tested for functionality. Minor oxidation to some metal surfaces.
Lot 976: 2 Swiss Rechenwalzen Calculating Drums Previous Item Lot 978: 12 German/Swiss Clocks, incl. Seth Thomas, Elgin Next Item