Elcometer has added the new 309 Delta T hygrometer model to its line of climatic condition measuring equipment. Before painting, the coater must meet the coatings’ parameters which are clearly specified on the paint manufacturer’s product data sheet. Delta T (T?) and Relative Humidity (%RH) are two of these parameters. The new hygrometer is designed to be a user-friendly quick and accurate gauge for measuring these two characteristics. The unit comes with pass/fail gauge limits on-screen as well as a flashing green or red LED. The unit also features a backlight for use in dark or confined spaces, and fully-sealed sensors.