Small Anemometer, Simple device for elementary children to determine wind speed. It is simple enough for children to understand and use., Each

Details

Made of corrosive resistant materials for prolonged outdoor useCups are each mounted on horizontal arms which extends from the axis of rotationIncludes one red cup and three blue cupsRed cup is for determining the number of rotationsDimensions (L x W x H): 20 x 20 x 7.1cm (7.9 x 7.9 x 2.8 in.)Weight: 0.3kg (0.6 lb.)