ISO 10303-214:2010(E)

Figure — Arrowleft Figure — Clause 4 Figure — Arrowright

4.2.381 Plus_minus_bounds

A Plus_minus_bounds is the specification of the allowable deviation from a numerical value.

The data associated with a Plus_minus_bounds are the following:

4.2.381.1 lower_bound

The lower_bound specifies the value of the tolerance that shall be subtracted from the exact value to establish the minimum allowed value.

4.2.381.2 significant_digits

The significant_digits specifies the number of decimal digits indicating the accuracy of the lower_bound and upper_bound values.

The significant_digits need not be specified for a particular Plus_minus_bounds.

4.2.381.3 upper_bound

The upper_bound specifies the value of the tolerance that shall be added to the exact value to establish the maximum allowed value.

4.2.381.4 value_determination

The value_determination specifies information on how the Plus_minus_bounds shall be interpreted.

Where applicable the following values shall be used:

NOTE A Plus_minus_bounds may be specified in the design stage of a product but it may also be documented as measured on a manufactured part.

The value_determination need not be specified for a particular Plus_minus_bounds.



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