that ufo looks like a rocket. light on the tip (maybe stabilizing jets) and the big ass rocket engine in the back.
i'd like to look more into the tuning rod drills thing... because if it is that simple, why has this not become mainstream "history" news?
they had copper and brass.. so they could make tuning forks...
looking at the images from the videos those "staffs" had short "tuning fork" ends, which corresponds to the higher notes/hz on the C music scale
the smaller the forks the higher the frequency just eyeballing the staffs the "forks" look small. which would - correspond to 4096 Hz basically the C8 note(4109.9Hz)...2048 is basically C7 (2054.97Hz) and 1024Hz - C6 note(1027.47 Hz), -512 Hz fork - C5 note (513.74 Hz), 256Hz ~C4 note(256.87 Hz) etc.....
quick look on amazon has them selling tuning forks up to 4225 Hz