Very interesting,
The one question I would have is what kind of material was Meyer's tube made from?
I know he states in a video and the Tech Brief that the quenching discs are made from alumina ceramic.
Was the tube full of tiny alumina discs to make it flexible? Or was the entire tube the same material?
The alumina ceramic disc is only used where a open flame is required, like in a stove for cooking , it has qualities that allow little or no heat retention and also the flame is pushed out away from the disc as it burns so the disc stays somewhat cool...a good material for a welding torch tip insert !
the tubing was some sort of plastic extruded... these guys can add various powdered materials to the plastic to improve flow ( less friction for liquid materials) but in our case the gasses simply need to be filtered at the entry of each tube
15 thousandths is a very small diameter and there were 7 passages times 5 groups... a total of 35 passages in a 3/8 inch dia tube
the reason they were grouped in a star configuration is so that when the ferrule was clamped down at the fitting the tube passages wouldnt collapse.