... TGC ABD Trackball adjustment10 inch VGA monitorOB measurements: BPD, GS, CRL, FL, AC, HC, etcPermanent function of image store: 32 imagesBack ... : General menu: Distance, Area, Volume, Angle, Ellipse;Obstetrics menu: GS, CRL, BPD, HC, AC, FL, Fetus Weight;Heart menu: Distance, Time ...