HyLids - Digital (Special 6 pack) - Wide Mouth (3 3/8") Hygrometer Lid - FREE SHIPPING (USA)

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HyLids - Analog - Special 6 pack deal! HyLids hygrometer lids fit on Wide Mouth Mason canning jars. You are now able to monitor and adjust the relative humidity(RH) inside a jar and make adjustments as needed.


2 piece Analog HyLids hygrometer wide mouth lid w/outside ring

Spare Battery


10 Reviews

  • Posted by Artemio Alejandrez on Jul 9th 2020



    Saves me soo much guess work.