Request InfoMahr Inc.A device that calibrates phase-measuring interferometers has been released by Engineering Synthesis Design Inc. The CaliBallT — a 25.4-mm-diameter silicon nitride ball and kinematics mount — determines errors in the transmission-sphere reference surface. Calibrations can be done in as little as 10 min. It works with any brand or make of transmission sphere and can be used to qualify those with f numbers ranging from f /0.7 to f /11 or beyond. The device measures 42 × 51 × 56 mm and weighs 287 g.See full productRelated content from Photonics MediaARTICLESBioPhotonics Sep/Oct 2022 IssueVersatility in OCT System Design Opens the Door to New Clinical ApplicationsOptical coherence tomography (OCT), a noninvasive imaging technology, is a standard diagnostic tool used in the field of ophthalmology. 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We also produce a wide range of reflective...