Did you know the same company that makes wood moisture meters makes them for hops? I found that works really rather well for cannabis. And I did a side by side with it and a LOD tool and they were almost always the same, occassionally (when really terpy) it would be off, but that’s because LOD rips terps too.
This is the one I use. And they are now even calibrating it for “hemp” and it has a solid range - 7-34%, so you know, around day 2 until the end of drying.