A vintage, circa 1950’s industrial thermo-hygrograph by the London based scientific and optical instrument manufacturer Negretti & Zambra.
The thermo-hygrograph is an analogue, self-recording instrument that continuously measures and graphs both air temperature and relative humidity onto a rotating drum chart. Commonly used in museums, labs, and storage for environmental monitoring.
~ Dimensions ~
The item measure 45.5cm (18 inches) in length with a height of 32cm (12 ½ inches).
It weighs 7Kg
~ Condition ~
The hygrograph is in good overall condition commensurate with age.
It has not been tested and we cannot guarantee that it is in working order.
