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About This Item

 

Full Description

This document defines the maximum material requirement (MMR), the least material requirement (LMR) and the reciprocity requirement (RPR). These requirements can only be applied to linear features of size of cylindrical type or two parallel opposite planes type.

These requirements are often used to control specific functions of workpieces where size and geometry are interdependent, for example to fulfil the functions °°°assembly of parts°°° (for MMR) or °°°minimum wall thickness°°° (for LMR). However, the MMR and LMR can also be used to fulfil other functional design requirements.

 

Document History

  1. ISO 2692:2021

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    Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)

    • Most Recent
  2. ISO 2692:2014


    Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)

    • Historical Version
  3. ISO 2692:2006


    Geometrical product specifications (GPS) - Geometrical tolerancing - Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)

    • Historical Version
  4. ISO 2692/AMD1:1992


    Amendment 1 to ISO 2692:1988 Least material requirement

    • Historical Version
  5. ISO 2692:1988


    Technical drawings -- Geometrical tolerancing -- Maximum material principle

    • Historical Version