Small Hygrometer (1 3/4 Inch)
This affordable brass/glass analog hygrometer works in all cigar humidors, including humidors with built-in 1¾ diameter hygrometers in front or on top. It also has a calibration adjustment screw on the back. Just remove the clear rubber ring to expose the air holes. Magnetic mounting kit included.
Bought a large humidor to replace a couple of others that I had and had the complete assumption that this hygrometer would be complete garbage as the others. I was totally wrong. This one is heavier duty and has a rigid / tight adjustment screw point unlike the others which had a flimsy and virtually non usable screw in the back. Accidentally dropped it from my counter and it just responded with a heavy clunk. Very surprised with this unit and it will actually be used.
I got this hygrometer with a humidor. It seems to stick but it is accurate it just takes awhile to adjust, which is fine since I don't open my box all the time. It is more accurate than my digital, just make sure you calibrate it.
I tested this using the salt method and it was 6% under (showing 69% instead of 75%). After adjusting the needle using the screw in the back, it is now spot on. I put the hygrometer in a new humidor that I was preparing for the first time, and it showed about 82% with slightly damp interior plus a damp sponge and a Ciguardian Angel humitube. Once I took the sponge out after a couple of days, it showed 75%. Then it showed 70% once I loaded the cigars, and that's where it stays with the Humitube set at the right setting. It is finicky when you try to adjust the screw, but once done, it is great.