XIKAR Digital Hydrometer

XIKAR Digital Hydrometer is 1.75 diameter round, and this is important because it fits in the same hole as every old analog in nearly every humidor made Accurate to +/- 2% at 70% humidity Registers temperature in Fahrenheit and Celsius One step calibration button. Push and hold for 5 seconds and unit self-calibrates. This Xikar Digital Hydrometer is the best offered in the cigar industry along with a lifetime warranty.