紙かみ一ひと重え

noun which may take the genitive case particle 'no', noun

paper-thin difference; razor-thin margin; very slight

Describes an extremely small difference or margin between two things, often used in comparisons or near-miss situations.

• 合ごう格かくと不ふ合ごう格かくの差さは紙かみ一ひと重えだった。

  The difference between passing and failing was paper-thin.

• 彼かれの意い見けんと私わたしの意い見けんは紙かみ一ひと重えの違ちがいしかない。

  There is only a razor-thin difference between his opinion and mine.