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Certified Dial Thermo-Hygrometer

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 Product Description

This certified Hygrometer-Thermometer combination is certified to be accurate within ± 3% RH. The dial indicates the complete range of 0 to 100% relative humidity. Each instrument has been tested at three different positions of the dial at temperatures ranging from 32°F to 230°F. The calibration and certification are done under ISO-9001 control. The bi-metallic thermometer on the thermo-hygrometer is accurate to ±1% of scale with a range of 0°F to 210°F.

This is the only humidity indicator that we know of that has a 1-year guarantee and a 5-year warranty. Both the humidity and temperature are directly read without any calculations whatsoever.


  • Bi-metallic thermometer
  • Solid 6-inch overall brass case drilled for wall mounting
  • Color differentiated 5-inch dial with black letters and numbers and a red pointer
  • 1-year guarantee and a 5-year warranty


  • Humidity Range: 0 to 100% relative humidity
  • Temperature Range: 0°F to 210°F (-20°C to 100°C)
  • Accuracy: ±3% RH ; ±1% °F/°C
  • Resolution: 1% RH ; 2°F (1°C)
  • Shipping weight: 3 pounds

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