先幅　Point Width
刀の幅を身幅といい、先のほうを先幅といいます。横手のあるものは横手の位置、横手の無いものはふくらの始まるあたりの
幅を測ります。(参照「元幅」)

A width of J.S. is called "Mihaba=Body Width",Point side is called "Sakihaba"(see"Sakihaba").
We measure it on "Yokote position" for J.S. with "Yokote".
Without "Yokote",we measure about begininng position of "Fukura".