Today I'll cover this unique pipe with several openings. As it turned out, it's a fuel gauge. At least that's what the reference says. Please correct me if I'm wrong.
I'm going to present my trial & errors in effort to get what I felt, would be good results.
I'm not sure what this is, but from the looks of the long slot coupled with a clasp handle, I took it to mean an old fashion parking brake on the left side just under the throttle . Those brakes were of the kind where we pull back the clasp handle & as it's being pulled, one could hear rattling sounds until it reaches the end.
I employed the same technique here as I did with the fuel gauge. Only this time, instead of cutting short slots, I continued the cut all the way through to the end.
From there, I fashioned a clasp handle & threaded some silver colored thread through the tube & some of the pulleys. I think it came pretty close to mimicking the full sized aircraft.
From the photos taken from both the P-12E at Planes of Fame air museum & from the Nat'l Museum of Naval Aviation, the pilot's seat was of the bucket type, similar to one of the Mustang's.
I noted that the back of the pilot's seat was attached directly to the bulkhead.