Looking for some help with a humi

[IrishBoi]

Sorry its been a couple of days, been slammed at work. I'm almost sold on the cigar oasis. Here is a question though. Has anyone used an "old school" hygrometer in unison with something like the govee? can this be done or is it better to have one or the other. I really only want to have to do this once. Any advice would be greatly appreciated!