Black Body Calibration Sources bodyWahl Instruments, Inc. announces the addition of a new product line to its Test & Calibration Instruments catalog. New Black Body Calibration sources from Wahl Instruments are used for calibration and verification of infrared temperature instruments. Twenty-two different models are available to suit a variety of instrument specifications. Both cavity and hot plate types feature dull black surfaces, to achieve an emissivity of as close to one as possible. Models with built-in or standalone temperature controllers are available to provide stable, repeatable temperatures for uniformity, while also displaying the temperature of the target area. Communication ports are available on some models, allowing the user to set points for automatic test applications. For more information, visit