The dial hygrometer / thermometer is ideal for home, classroom,  lab or industrial use.

Large, clear, 0 to 100% RH scale on 4" dial is easily read from a distance. Uses a precise synthetic hair hygrometer with an accuracy of ±5%. Plastic face meets food industry requirements. Inner dial shows temperature using a bimetal thermometer, with an accuracy of ±2°F. Wall mounts. N.I.S.T. traceable Certification Report available.