Humidity Indicator Card, 10-20-30-40-50-60
Sales price without tax $2.00 Tax amount Indicates humidity levels. Blue spots turn pink as the humidity level reaches or exceeds the indicated level. Color returns to blue when humidity level drops below. Keeps on going.... and no batteries! Measures 1 9/16" x 4 3/4". Indicates humidity levels. Blue spots turn pink as the humidity level reaches or exceeds the indicated level. Color returns to blue when humidity level drops below. Keeps on going.... and no batteries! Measures 1 9/16" x 4 3/4".
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