Help choosing a thermometer/hydrometer

[Penny Hen]

There are several thermometer/hydrometers currently up for sale on ebay. Can anyone take a quick look at them and let me know which would be the best one to buy?

 

[Dee Dee 2]

After searching feed stores and hardware stores my light bulb went off and I went to Pets Mart.
I am sure most larger pet stores, esp. those that have reptiles, have a combo. temp. humidity theromoter. I chose ZOO IMF. If possible look in person. Look at all the theromoters and choose one of "many" that agree with each other. They are not necessary spot on accurate. I have another thero. that came with the borrowed bator. (Little Giant) The Zoo and other thermo. agree with each other. The one I bought at T.S. ~ a brooder therm. was 3 o off. I really like the Zoo ~ it is small and easy to read. Good Luck !