Altimeter, Sensitive, Type C-11, 35,000 ft, PN 642K-05-784 French Armée de l'Air We have seen claims that

We have seen claims that these were used in aircraft such as the Sopwith Camel and Sopwith Pup

Measures approximately 8 inches high and ~6 inches wide

The yellow symbol of Naval Air Station Alameda (CA) is stamped on its side

and the smallest pointer travels along an inner dial

Framburg reverted to production of lamps

Altimeter, Sensitive, Type C-11, 35,000 ft, PN 642K-05-784 French Armée de l'Air We have seen claims thatHere is a post WWII era Sensitive Altimeter, similar to the US Army Type C 11, made by Kollsman. The C 11 Sensitive Altimeter displayed altitude using 3 pointers. The knob is used to adjust the altimeter to the barometric pressure is displayed in the small window at the 3 o'clock position. See spec sheet in the photo gallery. It is in very good condition given its age. The glass and case are intact, and the knob rotates, and the pointers move. It is