Hygrometer. cheap dial pet store any good OR

[FLITZ]

Hygrometer help

I have some cheap ones from a pet store. for reptiles.. are they any good. I had one that seemed to be correct..just from sitting it near another one..so I bought another cheap dial one..the same as the first ..put them in the incubator side by side..and now one reads 10% higher than the other...thats not good....is it a fluke or just bad ones to use...Im going to try my hand at calibrating but who knows I'm using a soda cap some salt and water.. didn't measure it..and a plastic bag..

What do you guys use... anyone know of a cheap non digital one thats easy to find

 

[tec27]

I found out the cheaper hygrometers are the best ones to use. I use two. One i got from lowes and one i got from the pet store (like the one you mentioned). The one i got from lowes doubles as a thermometer too. I bought real expensive ones before and they were very inaccurate.

 

[nurse_turtle]

If you choose to buy one from the pet store, compare the readings of several. They should all read the same. If they don't, avoid them. I use a dial type hygrometer that calibrated within 1%. I bought it online from a cigar shop. When I compared the reading of the dial types at petsmart, they had different readings by more than 20%.