# Rule 2 (A.A.U. Four-Wall Hardball Rules, 1931, historical)

> **Historical rulebook: not the current rules.** The current rules are here: https://handball.theperfectship.com/rules/four-wall/

The ball shall be a standard hard ball. The size should be not less than 1⅝ inches nor more than 1⅞ inches in diameter; and the weight not less than 1½ ounces nor more than 1¾ ounces.

The material used should be the best grade rubber and yarn in the correct proportions to ensure the proper speed.

## Mentioned here

- [Ball](https://handball.theperfectship.com/ball.md)

Rulebook: [A.A.U. Four-Wall Hardball Rules, 1931](https://handball.theperfectship.com/rulebooks/aau-fourwall-hardball-1931.md)

Source: Charles J. O'Connell, How to Play Handball ... Including Official Rules for Play and Diagrams of Court Construction (New York: American Sports Publishing Company, copyright 1931; Spalding's 'Red Cover' Series of Athletic Handbooks No. 114R), pp. 102-104; Ohio State University copy (HathiTrust osu.32435007267735), page screenshots saved by the user from HathiTrust's viewer. Public domain in the US.