This document summarizes GOST 12232-89, a Russian technical standard that establishes dimensions and test methods for carbon brushes used in electrical machines. Specifically, it defines dimensions for carbon brushes and methods for determining electrical contact resistance between brushes and current-carrying rods, as well as methods for measuring the breakout force of current-carrying rods. The document provides contact information for obtaining a copy of GOST 12232-89 in various languages.