I bought a few from the local pet store that we have. I calibrated the ones that read my humidity and I found that they were only 2 to 3 percent off and the one with a hundred percent accurate. I also put in two digital thermometers and added two mercury thermometers. I found that two of my thermometers read exactly the same and the other two only read a half a degree off so I am able to have a good feeling that the temperatures are reading pretty precise. So yeah you should be able to find them at any pet store.Do Know what all your settings are on your machine?I will pick up a couple of other thermometers and hydrometers.
Anyone have any suggestions as to where to buy a good reliable one?
Thanks!