Antique art deco French aneroid barometer scientific

Description

Antique  art deco French aneroid barometer with a mercury barometer
Antique  instrument measuring atmospheric pressure, used especially in forecasting the  weather and determining altitude.This aneroid barometer is an instrument used  for measuring pressure as a method that does not involve liquid. Invented in  1844 by French scientist Lucien Vidi, the aneroid barometer uses a small,  flexible metal box called an aneroid cell (capsule), which is made from an alloy  of beryllium and copper. It includes a mercury barometer has a vertical glass  tube closed at the top sitting in an open mercury-filled basin at the bottom to  gage temperature .This one is art deco in style so it was produced around 1920.
Size H.18 x W.8  x D.3 , wood base , good antique condition ..
I  guaranty my Antiques to be original, shipping will be done by truck or UPS  depending on size. After the auction ends you need to contact me directly using the Ebay  link to contact me .I take Paypal and CC, you can also call me at the store 310 994 6009.I expect to be paid within  3 days  . CAUTION : I
sell antiques so expect a normal tear and wear to show even if all my pieces are refinished and considered in perfect antique condition .Californian resident to pay sale tax.