Double-Dimensioning

Since we were discussing drafting standards recently I thought I'd bring this up.

Double-Dimensioning: The appearance of more than one reference to a physical dimension in a project. These days it would specifically refer to printed drawings, as CAD models do not typically feature dimensions.

In "the old days" double-dimensioning was a definite no-no. Multiple references to the same physical object can cause major headaches when it comes time to revise a drawing. Sure, the "plan" is correct but someone forgot to update the detail drawing. When the fresh prints get to the field this can cause a lot of confusion.

Maybe it's just an isolated observation of mine, but it seems that with the trimming of drafting staff (let's say checkers, for example) due to the increased efficiency of CAD many times engineers are the ones doing the checking. If said engineers are not familiar with the decades-old traditions of effective graphical communication chaos can result.

Any opinions out there?

Paul Received on Fri Jul 21 20:25:00 2000