hey, yall i just went and got two new non digital thermometers for my incubator with the hygrometer attached, but they are about 1 degree apart, how do i know how accurate they are?
Put them in a zip lock bag, mix some crushed ice and a bit of water to form a slurry and submerge the bag in the ice for a few (5?) minutes to calibrate the temp.
I don't know how you would do the hygrometer, mine all have the remote probe and can be submerged in a salt mixture to calibrate, but there are several methods listed for this on page one.

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