These are casting forms. Each was made oversize to allow for shrinkage. The two on left are for the forward wing spar, the top middle on is for the wing flap gearbox, the long flat one is the flap handle arm, the next one is the rudder cable casting, and the two bottom ones are the rudder antenna post holder and bomb rack fitting.
Tim O'Connor
(502) 235-3801
Mailing address:
2375 East State Road 250
Brownstown, IN 47220
Airport Address 1019 Ave A
Freeman Field
Seymour, Indiana 47274