Hi,'I am trying to get my inc. set for eggs.they really need to be in there. I have three themometers.....one , a little round reptile type, one that came with the incubater and one digital. All read different.grrrrrrrrr Digital 97,round 92, original bulb type 100... and the two hydrometers are reading a 5 degree difference. If I thought buying new ones would help..I would.but afraid I would just end up with one more differnt reading. Thank You in advance.