Hi there Lou,
I sort of expected that about needing to "see both ends." But I couldn't seem to get a shot of em in focus when I stood the darn thing on end. Finally hoped someone would recognize it on plain sight. So now I tried setting the ends in my Venlic vise.
I wondered the same thing about it being a part as opposed to the whole. But then at only 52mm it fits real nice all by itself in its custom made box. Dovetailed at that.
Hal