Depth of Fully hemisphered head

Anyone have the depth of a fully hemisphered head as in the photo (Factory short stroke). The only measurement I have is 22.3mm but I think they vary. I'm not sure if the measurement in the photo is correct.

Probably 100% irrelevant, and not helpful at all... Oddly enough I get the same 22.3xmm if I subtract the squish band height from the total depth of the combustion chamber on a stock early Commando 750 head. I'm guessing that fully hemisphered means no squish band ledge. I can't tell if that is exactly the case from the image.

My copy of the 750 short stroke head drawing is getting a bit faded now, but I make the nominal depth 0.896” (22.75mm). Definitely not less than 0.887” (22.53mm).