Update: found it! Submitting: https://www.wood-database.com/donating-wood-samples/
I recently stumbled on an 'egg collection' for wood. This is almost literally what it sounds like - a huge collection of images of egg-shaped pieces of timber, that really shows off the colour and grain. A focus on Australian timbers, of course, but that's no bad thing as we're otherwise often poorly represented.
...for people living in U.S., Myanmar and Liberia.
FWIW the entries for each timber do have the metric (Pa, metre, etc) figures shown in parenthesis after the US imperial figures.
I _think_ that's the first time I've ever completely randomly stumbled upon myself online, i.e. with no intention whatsoever of actually looking up something I'd done. Nice little boost to start the day with :-)
Next step for someday is to replace phylotree.js with a D3 visualization on it which shows each image using the URL so you can see how the grains of the word relate according to the tree of trees.
Edit: Ah ! They have meters and kg/m3 on each detail page, that's better !
I like Ian’s Shoelace Site too.