Pulling my hair out over the thermometers! I've calibrated, but readings like night and day! Bought two standard incubator thermometors. Both had identical readings in the store. One calibrated at 32 degrees in ice water. The other at 34 degrees. I also calibrated a milk thermometer, and a very high quality digital livestock thermometer. The digital has a very long, thin metal probe. The incubator thermometer has been resting on top of the eggs for about 1/2 hour, and it's reading 95 or 96. The other one is reading 95. I don't know if it takes a while for them to register, or this is really the temp. The digital thermo. is poking thru tape (covering the vent hole) so the probe is not touching anything, and is about egg height. It's reading 103.5! I am about to scream. The embryos are alive/good. How can there be this much difference in temperature when I've calibrated everything? I know the milk thermo. is accurate, as I calibrated it too. I've already rigged it up for wet bulb. What a pain! I guess I can take off the wet end and use it for yet another reading.