Hygrometers showing different humidity

Hey guys, I just got done using a One-Step Calibration Kit from Boveda to calibrate 4 hygrometers; 2 digital and 2 analog.

I put them in the bag for 48 hours then set them all to 75%. I left them in the bag for another 24hours after calibration to make sure they were just right. All four of them are now dead-on at 75%.

I put them right next to each other in my humidor and they all started reading different numbers. They are 71%, 68% 69%, and 74%. Put them back in the calibration bag and they all went right back to 75%.

How close do you think they should all be? Thanks.

I am not a rocket surgeon by any means, and am unable to explain the discrepancy in readings. However, I wouldn't sweat it either. If you are aiming for 70% humidity I think you are close enough. + or - a percentage or two is not a big deal.

Personally, I'd throw out the one that's reading 74%:smiley36: The other ones seem fine, they're off by what, one or two which isn't even noticeable when it comes to cigars.