Thanks for all responses to my question, it is very kind of you to take the time. I did a google search on Grayson Controls as FLYBOYJ suggested and I found this information,
Other Aircraft Parts - B-17 AIR DEPOT
E17. Airspeed selector valve by Grayson. Double sided name plate standard...
Hello,
I just want to give a little more information about the Flying fortress that crashed in South Sweden by giving some links. The first link is a description about the incident (case 152) from Bo Widfeldt's book ''Making for Sweden, part two. The United States Airforce.''
Second World...
Hello,
I have just taken these photos of a mechanical part from a Flying fortress that crashed in South Sweden on June 21, 1944, and I would be very thankful if someone could help me with identifying what type of mechanical part it is.