Deb, I’ve got a couple of links for you. The first is self-explanatory:

B-17 ‘Memphis Belle’ takes to the skies with WWII aviators on board (VIDEO + Pics)

wsoctv.com

The second may be part of a WWI aircraft’s equipment, but I’m not sure:

World War II Era Sperry Gyroscope Mark 14 Mod 15 Gyroscopic Gunsight with Case