True Position is a GD&T (Geometric Dimensioning and Tolerancing) concept used to define how much a feature's location can vary from its specific exact location. It represents the diameter of the tolerance zone.
💡
Pro Tips
Enter the difference between the target coordinate and the measured coordinate.
If you measured X=10.005 and target was 10.000, deviation is 0.005.
!
Fun Facts
"True Position is always a positive value."
"It allows for a circular tolerance zone, which provides 57% more tolerance area than a square zone."
"Often used with MMC (Maximum Material Condition) to allow bonus tolerance."