Leaf area measuring device.
<video controls autoplay loop> <source src="https://s3-us-west-1.amazonaws.com/hmt-forum/leaf_area_measuring_device.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...632#post189903
https://www.homemadetools.net/forum/...365#post173297
https://www.homemadetools.net/forum/...743#post159676