I have 2 Accurite hygrometers and one Timex with the probe. I put them all on my desk today to compare them with my house thermostat, which is at 72. All 4 ended up different. The little thermometer that came with the incubator is 4 degrees higher, at 76, so I put it back in the incubator with that expectation. One of the Accurites was close at 73.3, one wasnt even close at 75.6, and the Timex, which has 2 numbers for inside and outside readings, was 74.3 and 75. The hygrometer readings were all over the place, the range being 8 degrees for all of them. So what do I do? Throw them all out and wing it?