Built-In Slide Rule Lets You Quickly Figure Relative Humidity
The self-contained reservoir on the Spirit-Filled Sling Psychrometer holds enough water for several hours of testing. The thin bulb design gives rapid thermal response. Sling Psychrometer is easily carried in your pocket, vehicle or pack without fear of breaking. The 4-3/4" shock-resistant glass thermometers telescope in and out of a protective case, which doubles as a sling handle and a psychrometric slide rule. 25° to 125F in 1° graduations. Includes one wick.