Zeal P2528 Whirling Pattern Hygrometer Microscopes Proven Accuracy: The cones have

Proven Accuracy: The cones have been thoroughly tested for accurate weight measurements

The clamp locks in the open position for easy loading

For globetrotters

not the threads

Zeal P2528 Whirling Pattern Hygrometer Microscopes Proven Accuracy: The cones haveZeal P2528 Whirling Pattern Hygrometer The Zeal P2528 Whirling Pattern Hygrometer is a reliable wet and dry bulb psychrometer designed for accurate measurement of relative humidity and environmental conditions. Using the proven whirling hygrometer principle, it compares wet and dry bulb temperatures to determine humidity levels with the aid of the supplied hygrometric tables. Housed in a durable yellow plastic frame with a convenient folding handle,