中ちゅう細ぼそ

noun which may take the genitive case particle 'no'

medium-fine; medium pointed

Describes the thickness of string, noodles, pencil lead, or the point of a pen. Used attributively with の.

• 中ちゅう細ぼその毛け糸いとでセーターを編あんだ。

  I knitted a sweater with medium-fine yarn.

• この万まん年ねん筆ひつは中ちゅう細ぼそのペン先さきです。

  This fountain pen has a medium-fine nib.