Hi David,
I will have to save the measurements for later, when I am home.
As to the
distal taper measurement, I do not think 2mm at the tip is too thin for several reasons.
First, the context and usage of this sword indicates a sword that would be used to slash (primarily) and stab(secondarily) at largely unarmoured targets. Whether this is a native British piece, or a sidearm of a Roman auxilla is up for debate. Either way, the opponents of the wielder are likely to be the native British tribesmen--thus the bulk of the opponents it faces are protected by a wood and leather
shield. MOre rarely, a helm, either bronze or iron might be used, and very rarely, a chielftain in mail may be the opponent. In any case, this sword is designed for use against the unamoured bits, where a thin tip would be useful for tip cuts and thrusts into exposed areas.
Also, this particular sword exhibits a rather strong and well-defined flattened diamond cross section. The thin diamond structure is still very evident even at the tip, giving the tip section a mechanical structural strength greater, in my uninformed opinion, than a blade which merely becomes flat at the tip.
Further, other archaelogical evidence supports the fact of the thickness and relative taper. For instance, another native British find, the well known Llyn Cerrig Bach deposit, yielded sword blades with similar measurements. This find is roughly contemporary in date. In his analysis, Fox gives measurements of the thicknesses of sword blades, often from the center and/or base and tip (depending on what is present, since several blades are fragmentary). One sword was 4mm at the center, and measured 2mm at the tip. At least 2 other swords were 3mm at the center, and one supposes they would have some amount of distal taper as well, if complete.
So about 2mm at the tip seems to me consistent with measurements of ancient blades and intended usage. I am fairly confidant that the sword's tip would perform admirably against its intended medium with both cut and thrust by virtue of its geometery.
Now, you won't see me trying to thrust through rivetted
maille or a bronze helm with this sword, but I rather doubt that this would have been something an ancient wielder would have done, either. ;)