Viewport measurements for Blender

Visualizer draws viewport rulers for height, width, depth and optional radius, with precision controls for the labels, and outlines the measured selection so extents stay readable while you orbit. Reference silhouettes sit beside your object with configurable labels, line width, opacity and active-object defaults, and a screen-anchored camera orientation gizmo has position, scale, roll and world-facing direction controls. It is still in development, so details may change before release.