Komal Scientific Co. Supplies Climate Condition Testing Whirling Hygrometer. Komal Scientific Co. Offers wide ranges of Testing instruments for paint, printing ink, powder coating, adhesive, resin, thinner, pigment etc. Climate Condition Testing Whirling Hygrometer is available in either a degree C scale. Climate Condition Testing Whirling Hygrometer is a convenient, self contained instrument with a built in slide rule for the calculation of %RH and dew point. It has spirit filled thermometers and is also available in Deg C or Deg F scales.