The Delmhorst RC-1E/SP/PKG Analog Wood Moisture Meter Package with 26-ES Electrode and (10) 496 Pins - Southern Pine is used to measure moisture in gypsum using a three-range scale: (0.2%-1%, 1%-8%, and 8%-50%). Clad in a durable and beautifully finished hardwood case, the RC-1E’s classic design and wide moisture measurement range make it a valuable addition to your toolkit. The RC-1E has been a favorite among dry kiln operators for years.