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Psychrometric Slide Rule, Weksler

Psychrometric Slide Rule, Weksler


SKU: 900-62345

Regular price $10.95 Sale

This easy-to-use, flexible white plastic Pocket Psychrometric Slide Rule quickly calculates the percent of relative humidity by comparing wet and dry bulb thermometer temperatures. The temperatures are listed in Fahrenheit from 20 to 100 Degrees F.

NOTE: for sea level altitude only.