Request Info4D Technology CorporationThe Vertical Digital Radius Slide from 4D Technology Corp. provides precise radius of curvature measurement of concave or convex optics. The slide provides axial positioning resolution to 1 μm for accurate measurement using 4D Technology’s AccuFiz compact laser interferometers. The device integrates with 4D Technology’s 4Sight data analysis software for fast, wizard-based radius of curvature measurement. 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