Measure overlay adding edges for a total length — Right-Click Select
How to MEASURE EDGES in Blender! - YouTube
How to accurately measure in Blender - Artisticrender.com
Measurement tool snapping - User Feedback - Developer Forum
Blender Tutorial : Set Specific Edge Length ( Numerically ) - YouTube
Always Show edge length inside the face — Right-Click Select
Measurement transform (directly change the size of the selected edge) and color - please change and make text size editable - User Feedback - Developer Forum
How to measure the sum of the length of all edges of an object? - Python Support - Blender Artists Community