If either of these solutions is insufficient for your, let me know. I'll figure out another work around for you. Norm Q2 . I have a customer who wants more information about creating a custom Datum. I have no idea about this one.
Any assistance is appreciated.
In the datum realm, units are fixed. The scale value is in parts per million, plus one. That is, a scale value of -1.0 produces an effective scale factor of 0.999999. This selection of units is a de-facto standard. What is not standard, is the sign of the numbers.