use measuring dew Dew ...instruments are R. Leick's porous gypsum plates and S. Duvdevani's dew gauge, consisting of a wooden slab treated with paint. To determine the amount of dew, Leick's plates are weighed. whereas Duvdevani's gauge involves the use of an optical dew scale. Other investigators developed recording dew balances whose surface and exposure conform with the surrounding surface as far as possible. It...