Detailed Product Description Portable B-Ultra ScannerAM15285Fuction & Specification1) Attractive and portable plastic injection design ... frequency,edge highlight and digital scanning,etc. 3)Reliable performance with thanks to the application of latest large-scale PLD ... : 2mm,Longitudinal: 1mm;Gray Scales: 256 Grades;Display Mode: B,B/B,B/M,and M;Monitor: 7"Right Angle CRTMeasurement: Distance,Perimeter ...