Oh, on the thermometers -- yeah. I still worry about that too, although in my case a huge part of the problem is the fact that it's a still-air incubator so temperatures fluctuate a lot from one area to another. Literally half an inch difference up or down can give very different readings.
As far as accuracy goes, do you have anything you can test them against? That's the only thing I can think of, to compare their readings to something you *know* is accurate... Good luck! And a warning: this stuff is addictive. I've only had chickens three months and I'm already hatching out more
Although on the other hand -- last month? $12 in feed, 12 dozen eggs. And they're WAAAY better than the store-bought ones!
As far as accuracy goes, do you have anything you can test them against? That's the only thing I can think of, to compare their readings to something you *know* is accurate... Good luck! And a warning: this stuff is addictive. I've only had chickens three months and I'm already hatching out more