Maximum material principle
The rule of the maximum material has for base the capacity in the assembly of two elements.
The symbol
means that value indicated
for the geometrical tolerance must be respected when the element is in
its maximum state of material. This value can be exceeded by a certain
value according to the real state of the element.
The diagram below shows relation between the real diameter of the element and the value of the location deviation. So, the number of good parts authorized by the rule of the maximum material will increase in a significant way.

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