do you understand yet I have these
ok Bubbles the one with the big face is from GQF while easy to read can't be set after calibration . the little one is called a Mainstays from Walmart if you look at the top picture you see the small one has a nut on the probe this one can be set after calibration . I do not trust digital thermometers at all . I pushed the probe through the top of the incubator near the center and it is at the exact right level at the center of the eggs . the big one $25.00 QGF the little $10.00 Walmart this is what I use and the hygrometer you just got . you can buy similar thermometers at auto zone we use them for automotive ac repair . as long as it can be set after calibration you are good .