Caliber IV - Digital Hygrometer Thermometer

Date Added: Monday 01 September, 2025 by Paul

I bought this Caliber IV digital hygrometer to replace the old round 'analogue' one in one of my humidors which never seemed to vary much in its readings. This is so much better and I think good value for money. …

Date Added: Sunday 27 June, 2021 by Craig

IÂ’d be lost without this piece of small tech. Buy a humidor, upgrade and get it half price is a bargain! Or if youÂ’re upgrading a less reliable hygrometer, then look no further. …

Date Added: Saturday 14 November, 2020 by Ahmed

First let me thank Caliber so much for this smart IV - Digital Hygrometer Thermometer. …

Date Added: Monday 04 January, 2016 by Daniel

Reliable, accurate and very easy to set up. I feel a lot more confident having it in the humidor.

Date Added: Monday 27 July, 2015 by Staff

The Caliber IV is absolutely fantastic, what I like most about this hygrometer is the precision/accuracy, the digital display and it's slim but sleek profile design. …

Date Added: Thursday 25 September, 2014 by Ross

My first two purchases were the Xikar Hygrometer Rectangular version. On both of these Xikar hygrometers the tolerance is 2% either way whereas the Caliber IV is 1%. Both Xikars were not within specification using the Boveda Hygrometer Test kit. Bought a Caliber and popped it into the bag and within…