Handball
Rule

A.A.U. Four-Wall Rules · American four-wall

Rule 3 The ball

HistoricalA.A.U. Four-Wall Rules, 1903 (historical)

Historical rulebook: not the current rules. The current rules are here (USHA Four-Wall Rulebook, as of 26 January 2025).

The ball to be used shall be a full regulation Spalding ball, and must measure one and seven-eighth inches in diameter and weigh one and five-eighth ounces.

Mentioned here