In incubation, temperature isn't a suggestion. It's everything.
And the temperature that matters is the temperature where your eggs actually are.
The Miller Little Giant® Incubator Thermometer rests right on top of your eggs, giving you a simple secondary temperature reading at egg level. The clear backing and easy-to-read markings let you check the temperature through most incubator windows without opening the lid every five minutes because you're nervous.
Not that you would do that.
Obviously.
Place the thermometer flat on top of the eggs so you're monitoring temperature at egg level.
After making temperature adjustments to your incubator, give conditions time to stabilize before deciding whether another adjustment is necessary. Small temperature fluctuations can occur as an incubator's heating system cycles.
A secondary thermometer gives you another reading where your eggs are actually sitting, instead of relying solely on a sensor located somewhere else inside the incubator.
Because staring anxiously through the incubator window is perfectly acceptable.
Opening it every six minutes is not.