A 19 century Daniell’s hygrometer on boxwood stand.
€ 175.-
A 19 century Daniell's hygrometer on boxwood stand.
Dimensions
27 cm high
Circa
19 century
Country of manufacture
UK and Ireland
Description
A 19 century Daniell’s hygrometer on boxwood stand.
It consists of a turned boxwood base and stand screwed into the base, with a thermometer on the shaft and a glass tube hanging through the upper part.
The double glass tube filled with ether and a bulb at either end, as explained below, contains a second thermometer.
In completely original and working condition
The Daniels hygrometer was invented to measure the relative humidity of the air and was notably used by Admiral Fitzroy during his famous voyages of discovery with Charles Darwin on the HMS Beagle.
‘Daniell’s hygrometer for determining the dew point by direct observation, invented around the year 1820 by the late Professor Daniell of Kings College London.
Measures 27 cm high and 21 cm wide
Is well packaged and sent by registered post with track and trace
Ask the Dealer
Dealer information
Early Science
Early Science antiques was founded in 1978 by Fred de Vree based in the Netherlands where I can also be visited by appointment. I have been active for 4 decades as an antiqair and auctioneer, the last 20 years of which are specialized in scientific antiques. I visit collectors and fairs in many European countries. looking for special items please feel free to contact me by Phone or email ,if you need any information on my listed items or something you are looking for 0031653132842 [email protected]
Other items See all
-
-
Dental Dentist tool 18th €145.- -
-
