Does anyone know how to calibrate a Calibur III?

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Originally Posted by NCRadioMan

The Calliber III can't be calibrated. They say not to, but I always have without any issues, but you can use the salt method to test the hygro. Take a 2 or 3 liter bottle cap, fill with salt and water just enough to make a paste. That is a 75% solution. Put that and the hygro in a bag and after 8-12 hours, it should read 75%. If not, you can see how far off it might be. Or you can do the same with a boveda pack.


Welcome to the Asylum.

Thanks, man... I just ordered a Calibur IV I hear the Calibur's are the best because they are +/- 1% humidity I haven't seen any more accurate than that.