I would actually make a photogrammetric model. Wood photogrammeterizes very very nicely due to all the unique feature points. Take a bunch of photos from a bunch of angles, and feed it into something like RealityCapture. Then you can scale the model using known dimensions such as the width or height, and take measurements from the scaled model. This strategy is actually used on a larger scale for surveying.
Assuming you have a machine with an NVidia GPU to try it:
https://www.capturingreality.com/