When using Measure tool to check the distance on a convergent body, you can't seem to select any points.
Solution
In NX1899, you can measure points on the convergent body, but you need to turn on Point on surface from Snap point toolbar as below:
Then you can measure between the points:
Notes and References
Hardware/Software Configuration
Platform: INTEL
OS: windows
OS Version: n/a
Product: NX
Application: DESIGN
Version: V1899
Function: CONVERGENT
Ref: 001-9793273