SOLD This is a rare barometer altimeter made by well known scientific instruments maker PHBN (Naudet & Cie) Paris. The barometer scale goes from 52-78torr or mm/gh and the altimeter scale ranges from zero to 3500 m adjusted by the top bezel.
The body of the device is made from chromed brass with minimal wear and tear due to the age. The whole device comes in a well fitted leather case in excellent condition. The device is still showing differences in the barometric pressure and altitude variation. Dimensions of the device: face diameter 55 mm and 24 mm height. SOLD
