Twin ball indicators in ww ii aircraft
There is a discussion going on in a thread in the Military Section with regard to two sets of slip indicators (ball in a tube) in the cockpits of some types of WW II American aircraft; notably the Kittyhawk and Vengeance dive bomber.
My theory, not having experience on the types, is that the second slip indicator, mounted high up on the panel, was used as an easily seen final check that the aircraft was in balance for sighting accuracy. Some older and bolder than me are either in agreement or not convinced.
Is there any record in the test pilot's empire that has a reason for fitting a second T&S ball in a cockpit during the early 1940s?
We like to get a few things tidied up before we pop our clogs.