Looking on the Japanese site this morning and came across a page on how Mizuno measure clubs and while they conform to the std methods for most they differ on club length and face progression.
Google Translate
"
Mizuno's spec measurement method
Apply the sole to the plate set to the design lie angle, and set the heel end at the point of 3/8 inch from the base point of the plate. The distance between the “set heel end” and the “grip cap line” is the club length. * Putters are up to the grip end. "
https://www.mizuno.jp/golf/spec_guideline/
If Cumbernauld do it this way the idea of them measuring length without a grip will have to go out of the window.
Google Translate
"
Mizuno's spec measurement method
Apply the sole to the plate set to the design lie angle, and set the heel end at the point of 3/8 inch from the base point of the plate. The distance between the “set heel end” and the “grip cap line” is the club length. * Putters are up to the grip end. "
https://www.mizuno.jp/golf/spec_guideline/
If Cumbernauld do it this way the idea of them measuring length without a grip will have to go out of the window.