so i should put both thinks in the bator lol dont sounds like a bad idea
Lookup your make and model of thermometer to see if the probe measures humidity...evidently there are some that do. You could get a cheap analog type thermometer/hygrometer like this
And cut out just the hygrometer section (careful to not bend the coil spring on back) and put that inside. Those are just 2 or 3 dollars. Make sure to calibrate it first.