The beauty and class of a traditional analog hygrometer combined with the accuracy of a digital hygrometer. Welcome, the Western Caliber 4R. This digital hygrometer features the timeless appearance of an analog, but reads digitally within +/- 1% at 70% RH. Check back and test how well your humidor is holding humidity with the high/low humidity memory feature. Also equipped with a magnetized mount and ZX circuit technology to prevent false readings, look no further for the Rolls Royce of hygrometers.