I don't know how to do the quote thing but you said "I want to get a thermometer we can use to measure the internal egg temperature because that is the target more than the air temperature."
I remember reading that you can get one of those dollar store water weasel kids toys (you know the ones that look like a water balloon tube that slides into itself in your hand) and stick a thermometer probe for a digital thermometer in it and it would simulate the internal temp of the embryos. I don't know how accurate that is but it might be worth a try. I'm only on my second hatch, 5 days in, so I'm far from an expert just passing a long a suggestion
When you reply you just need to use the quotation marks below the post and then choose "quote and reply" to get the quote coding in your message.
Our Dollar Tree does not have those but I have seen other ways to make them. We don't have a good thermometer, though, so I figure if I need to buy a thermometer I would like one of the ones that takes the egg temperature instead of the air temperature.
We built a cabinet incubator that I need to be able to test to make sure it maintains the correct temperature throughout a large space so it is time to invest in a good thermometer to see if there are hot spots and cold spots that we need to troubleshoot by forcing the air to keep consistent temps in all the eggs. The styrofoam incubators are heating a small area so we have never had an issue with hot pockets or cold pockets within that space. Then again, I focus on making sure it is doing its job more than I chase numbers on a thermometer or hygrometer. I like the fact that there is no number showing up on our incubators causing me the stress and worry it does for others who try to chase tiny temperature fluctuations.
Even our own body temperatures fluctuate throughout the day so I would be crazy trying to keep myself at exactly 98.6 at all times, especially considering that is not even my "normal" temperature. The number is only a number, it is the range that is important. Specifically you want to avoid causing a "fever" in your incubator so we are probably on the lower side of the range to buffer against warm weather heat spikes killing our embryos.
I think the manufacturers don't put sensitive thermometers in their incubators partly because they use cheap ones that keep the price lower but also because the temperature does not need to be as exact and steady as many people believe. There are actually studies that suggest a "cooling" period simulates the hen taking a break to eat and drink so it may help produce more viable offspring. The weather conditions also effect the egg temperature in a nest and all the hen has to do is feel cold spots on the surface of the eggs and warm them to her body temperature, whatever that may be at any given time of the day. She uses an inexact science to hatch her eggs so I don't get concerned over excessive monitoring and logging results either or it would be too stressful running so many styrofoam incubators.
Edited by Duck Drover - 5/18/16 at 12:56pm