I'm out of town, so can't take a measurement right now -- and as the watch isn't on Parmigiani's web site (or anywhere else) yet, there's no authoritative source other than the watch annual on my desk at home.
However, f I recall properly, it's about the same length as, and a little wider than, the Kalpa XL. The XL measures in at 53x37 mm (I'm not sure whether that's the case only, or lug to lug), so I'm guessing maybe 53x39 for the Kalpagraph. Happily, the Kalpa lugs curve in a fairly pronounced way -- so it wears smaller than that, at least on me.
Fit is, of course, a highly subjective thing. I'd love to own a Royal Oak, but the flat lug extension makes even the standard size case hang out over the sides of my wrist -- and you can forget the ROOS. I have an Omega Ploprof, which is 50mm+ but the other way (left to right as opposed to top to bottom) and fits me really well.
Perhaps I'm destined to wear these sorts of specialty items!
Last thing -- thanks for the rapid and friendly offers of assistance on posting -- I'll respond to your latest email as soon as I can.
Best,
Gary G