Yep, I have an Oasis in-case hygrometer in each case (so five in total), and a ThermoPro room hygrometer in each of the two rooms I keep my guitars in. So I always have a handle on how things are no matter wher I have my guitars in their cases or out on stands.

A dried-out Martin 20+ years ago has made me very careful where RH is concerned. Fortunately there was no lasting damage to the guitar, and a few weeks in its case with a humidifier brought it back to good condition.

I’m always surprised how many owners of quality solid-wood guitars pay so little attention to proper humidification.