anyone know where i can buy a good digital hydrometer?

[floridachickhatcher]

i have analog ones and i think they are way off and i dont think i could calibrate them so im just going to buy a digital one for now and see how i like it cause one of them says the humidity is 40% while the other says 55% and im trying a dry hatch and i need it lower than that there is no water in the rings so i have no way of tell what is the right reading and the temp is 99.5 and the vent plugs are pulled out

 

[Dar]

try a green house...

 

[cmom]

This is the hygrometer I use and it is accurate. I calibrated it and it was perfect.
http://www.eggcartons.com/New-Design-Incubator-Hygrometer/productinfo/FHP-HYGRO/

Here is one I put in my hatcher and it was right on. There is a temperature sensor on the side where the heat source is. This picture was taken before I installed a fan.

This was after I installed a fan.