Ok, We have all dealt with this incredibly important yet incredibly annoying task.
I have just finished re-seasoning my humidor(HUGE THANKS TO EVERYONE AGAIN...I will raise a proper cigar and rum to you all next week) and I figure might as well recalibrate my hygrometers.
I did some reading to find the best way and I have come to the conclusion there are about 10,000,000 ways of doing it.
I figure experience goes further than any other type of advice...
So ladies and gentlemen I put it too you: How do you personally calibrate you Hygrometers.
Thanks in advance....again