What are you all using these days to check your incubators? I have a Brinsea Oct Eco and Ovation 28. The Ovation allows me to set temp. The Octagon has a glass thermometer. I have I Brinsea Spot Check Thermometer, but not sure I can trust it. With the Ovation it reads low, and with the Octagon it reads really high. I had a great hatch with both of these 2 years ago. I’d love to be able to check them with something reliable to make sure they’re still calibrated but not sure what to use. Any suggestions? Thanks.