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	Frey Scientific Sling Psychrometer, Pack of 15
	
	
					About This Item
				
	
				Description
Frey Scientific Sling Psychrometer is an economical but effective device using the difference in the readings of a wet-bulb and a dry-bulb thermometer to find out the relative humidity. The wet-bulb thermometer is cooled by the evaporation of the water when whirled and shows a lower reading than the dry-bulb thermometer. Comes with a chart for getting relative humidity. Pack of 15.Features
- Substantial set is perfect for your classroom
 - A fun, hands-on activity that will keep your students engaged
 - An excellent supplement to your meteorology unit
 - A great way to get your kids outside
 
- Chart
 
			
			
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				parcel
			
		
	
		
			
			
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				true
			
		
	
 Specifications
    
	
		
			
				Certifications:
			
			
					
						Not Applicable
					
				
		
	
		
			
				Maximum Age:
			
			
					
						12 years
					
				
		
	
		
			
				Allergens:
			
			
					
						Contains No Allergens
					
				
		
