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| WHIRLING HYGROMETER
(0663) |
| The ventilated type of hygrometer gives greater accuracy for humidity demonstrations and is particularly useful for measuring local differences in humidity. There are two thermometers mounted inside a case, fully enclosed to prevent breakage, one dry and other having a wick dipping into a water reservoir at the end of the frame to keep it wet during long periods of non-use. The thermometers are stem engraved with lens fronts for easy reading, range -5 to 50 x 0.5?C. Includes humidity and temperature conversion chart. |
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