BSI has published BS EN ISO 2692:2006 Geometrical product specifications (GPS). Geometrical tolerancing. Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR).
BS EN ISO 2692 is the international standard that defines the maximum material requirement, the least material requirement and the reciprocity requirement, and specifies their applications.
BS EN ISO 2692:2006 replaces BS ISO 2692:1988, which has been withdrawn.
The standard is priced £118 (+P&P) or £59 for Members of BSI.
ISBN 978 0 580 60125 5.