Question about thermometers / hydrometers ... Just how many do you have to go through to be sure you have an accurate one ??
I have a digital thermometer/hydrometer I bought last year after I lost an entire batch of shipped hatching eggs (the old singular incubator one I had in with the 'lost' batch of eggs was off by 3 degrees) >> According to the new ones > I verified the new digital with > a new incubator thermometer & a new brooder thermometer > all 3 were within 1/2 to 1 degree of each other ...
Which I thought was acceptable because of their placement in my old still air incubator , it had a auto turner ....
This year I bought a new forced air incubator w turner and the thermometer thats built in it is off by 4 degrees > according to the digital therm/hydro & brooder & incubator thermometer from last year ......
I bought a new still air incubator to use as a hatcher and according to the directions I set it at 102 and the digital & brooder thermometer & incubator thermometer showed 99.5 lying on the floor of the incubator so I'm assuming the built in thermometer hydrometer built in it is correct ....
But I bought another digital thermometer hydrometer last week to use in the still air as a second check ... I put it into my fan incubator when it arrived to 'check' it and it says that that incubator is 103.5 !! when the other digital is saying 99.5 and the 2 others in there are within 1/2 degree of it !!!
Right now I have the new temp/hydro sitting on my house furnace thermometer which says the house temperature is 77 and the new one is saying 78.6 / 78.4..
I've been putting the eggs into the fan incubator on Monday evenings .. I'm moving to the still air hatcher on day 18 > Friday for lockdown and hatchings are 'starting' Sunday morning/afternoons , technically a day early , which I know can happen due to higher temperatures .. and I've had eggs not hatching (that when I candle look full of chick) and last hatch 2 that pipped a complete ring around the egg but didn't get out ...
I am driving myself nuts with this .... Is there no such thing as an accurate thermometer anymore