Casella Instruments Humidity Slide Rule


  • Simple humidity conversion table via a slide rule. Ideal for use with either a whirling hygrometer or instrument screen with masons hygrometer.

    After taking your dry bulb temperature, simply set the rule, and, at the wet bulb temperature, read off the percentage relative humidity figure.

    • Suitable for use with whirling or masons hygrometer
    • Measurements in °C or °F
  • Temperature Range -15°C to +60°C

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