This Sling Psychrometer meets the GLOBE program protocols for relative humidity. Safe and easy to use, this sling psychrometer allows for easy conversion of wet and dry bulb readings to relative humidity - eliminating the need for conversion tables! Features a durable plastic case, slide rule and a red spirit thermometer. Measuring Range: -5°C to 50°C; 10% to 100% RH. Accuracy: ±0.5°C; 5% RH. Graduations: 0.5°C; 2% RH. 8.25" Long.
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