Antique Aircraft Altimeter Barometer Jules Richard Paris Aviation Militaire WW1
This is a scarce WW1 era French Military air Service (Aviation Militaire) aircraft altimeter barometer made by well-known scientific instruments maker Jules Richard Paris. The barometer scale goes from 46-80 torr or mm/gh and the altimeter scale ranges from zero to 5000m adjusted by knob. The body of the device is made from nickel covered brass with minimal wear and tear, the silvered face has nice red and black markings. The device comes in an original burgundy velvet and leather case with some of the original cockpit fixing rings. The leather case is missing some of the fixing rings and some of the leather is dried out) The device is still showing differences in the barometric pressure and altitude variation. Dimensions of the device: diameter 95mm and 32mm height.