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

air speed is indicated along the inner scale up to 450 Knots

used to display the rounds of ammunition remaining in reserve

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

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

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