Photovolt - Model 577-S -Reflectance Colorimeter

Universal Power Input, Includes: Digital Storage and Output, 24 bit resolution for high accuracy and expanded features. Requires a Search (Optical) unit, either the W search unit with a fixed blue filter, a Y search unit (with a ~1" aperture) which takes one of three color filters (green, amber, blue) or a D search unit (with a 3" aperture) which can also take one of the three filters.