This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist. This documnet has been determined to caontain basic and stable technology which is not dynamic in nature. This document was superseded by SAE ARP 4163. This document establishes design parameters for balancing machine tooling, fixtures and accessories. Adherence to the recommendations make herein will facilitate compliance with ARP 587A and 588A, as well as the attainment of the usually high degree of readout accuracy and precision balance required for jet engine rotors.