Hygro-Thermometers Reviews

I bought a bunch of these to put in jars. I think it just messes with my mind more than being useful. The accuracy is about 1-3% so if you have several in one jar they can be a few percent apart from each other. I think its better to trust the process and focus only jarring material that is READY and then just use it. Don't worry about jar humidity as much. To me these are not accurate enough to use for a tent or drying chamber.