A what? A sling psychrometer is a difficult word for a very simple tool. It dates back to the 1700s and is actually still used today! If it ain’t broke, don’t fix it. A Sling Psychrometer is a simple ...

JELINEK'S psychrometer tables are among the best known of the many humidity tables in use on the Continent. Originally prepared by Jelinek from the earlier tables of Regnault and Wild, the work has ...