I have recently discovered something and I can't explain and even worst my customer has noticed it and would like an explaination.

v3.7mr3, CAD++, BnS Xcel 12-20-10

If I take a sample surface measurement and then reference that point when doing a vector or surface point on the edge the "T" deviation is not the sqrt of the sum of the squares, it appears to add the surface deviation from the RMEAS point into the calculation. My question is how do you report the edge normal deviation on a point that requires an RMEAS.

v3.7mr3, CAD++, BnS Xcel 12-20-10

If I take a sample surface measurement and then reference that point when doing a vector or surface point on the edge the "T" deviation is not the sqrt of the sum of the squares, it appears to add the surface deviation from the RMEAS point into the calculation. My question is how do you report the edge normal deviation on a point that requires an RMEAS.

## Comment