@kelseyk I have these, multiple per incubator: https://www.amazon.com/dp/B07DWMJKP5?ref=ppx_pop_mob_ap_share
I like them because they store the temp history so you can see the fluctuations in temp and they can be calibrated.
I actually have a smaller Govee thermometer/hydrometer in all 3 of my hovabators for that same reason! It would be the white square thing sitting in the egg cup behind the large dial thermometer with the number 2 written on it. I love being able to track the temp. I have found that they will go haywire for short periods of time every now and then (like read 3-5 degrees cooler or warmer for a day or so then go back to normal).
	
....I left the large dial thermometer in there overnight without taping it down and it got stuck between the rails and popped the rails off.....all of them!