reference dimension

reference dimension

[′ref·rəns di‚men·shən]
(design engineering)
In dimensioning, a dimension without tolerance used for informational purposes only, and does not govern machining operations in any way; it is indicated on a drawing by writing the abbreviation REF directly following or under the dimension.
References in periodicals archive ?
Productivity Enhancements -- Autodesk Inventor Release 3 productivity benefits include a fastener library of more than 10,000 standard parts, streamlined adaptive design features that enable users to build powerful, adapt-to-fit relationships in fewer steps, and a reference dimension in equations tool that provides an easy way to solve complex geometry problems.
The operator then places the movable calibrated video cursor over the portion of the image to be measured, and an automatic system computes its value based on a known reference dimension.
Figure 1, indicates the reference dimensions and their locations for shrinkage estimation of corresponding molded parts.
Next, reference dimensions to fixture the part were generated using the model.