Operating system: Linux - Fedora 30
Graphics card: GeForce RTX 2070
(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Short description of error
The MeasureIt addon is reporting radius as though the distance between verts is at default scale, not scale set in global Unit Scale.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
Pick 3 verts in correct order
Click "Arc" button in MeasureIt panel
Observe results of radius value