All very worthy requests Brian for specs of a tolerance tool that make perfect sense, my problem being that VW per se, struggles to meet the basic ability to remember what dim you give it. If once a fine tolerance is set, say +/- 0.5mm(with 1 decimal place selected) only to find that when checking the accuracy under 6, 8 or 10 decimal places the dimension has slipped to 0.42823751. This is particularly visible with 3D Objects and Symbols constructed from extruded 2D profiles developed with Added and Subtracted volumes that despite the base 2D object maintaining the precise required dimensions, by the time you reach the final model, the precision is lost, through no fault of errors. The deeper the nesting the greater the likelihood of lost precision.
If a profile of 775.75 x 200 millimetres is drawn however irregular, when satisfied with the finished 3D design, one would like to be certain that it fulfills requirements and some poor shmuck :eek: :crazy: wont need to labour over the drawing for 5 days to get the accuracy up to scratch for production, whether it's miles or millimetres.