... High Quality SF660 Portable Full Digital Ultrasonic Daignostic System for vet or human, Horse Head Brand Main Features ... .4 inches SVGA high resolution non-interlaced monitorImage conversion Up/Down, Left/Right, Black/White Display ... Micro-convex MeasurementGeneral MeasurementDistance, Angle, Area, Volume, Ratio and stenosis ratioProfessional MeasuremenGynecology, Obstetrics, Urinary, Small Organs, ...