Altimeter, Sensitive, Type C-11, 35,000 ft, PN 642K-05-784 French Armée de l'Air Measures approximately 8 inches high

Measures approximately 8 inches high and ~6 inches wide

This was intended for use in bombing targets requiring concentrated bombing patterns

see attached tag

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

The remnants of a replacement lamp are stored in its recessed position in the case

Altimeter, Sensitive, Type C-11, 35,000 ft, PN 642K-05-784 French Armée de l'Air Measures approximately 8 inches highHere 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