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- Measuring Japanese Swords, Naginata and Yari



Nagasa & Sori -

The blade length is measured from the munemachi to the kissaki along a straight line. Older books on the Japanese sword will reference the nagasa as the length to the end of the nakago. The sori is the curvature of the sword from the line used to measure the nagasa and the deepest part of the curve along the mune.

Kissane & Mihaba -

Kasane referes to the thickness of the Mune from side to side (see drawing). The Kasane at the Munemachi is called the motokasane and the thickness of the mune at the kissake is sakikasane. The area behind the motokasane on the nakago will usually show the original thickness of the blade.

Measurements of Kissaki -

This defines the length of the kissaki.

Nagako

The nakago is measured from the notch between the Mune and the Nakago, called the munemachi, to the nakagojiri.