Casella Instruments Humidity Slide Rule Hygrograph Charts Kit Type Advanced Weather Observation

Kit Type Advanced Weather Observation Kit Suitable For Schools

and those looking to build on a basic understanding of weather monitoring

12- and 24-hour modes

Rotating once every 29

Plastic rainfall measuring jar for any 5" diameter rain gauge

Casella Instruments Humidity Slide Rule Hygrograph Charts Kit Type Advanced Weather ObservationDescription Features Specification 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 15C to +60C