... scanner YSB0119 1,portable ultrasonic scanner 2,human ultrasound scanner ... examination etc.4. 3 step multi-frequency 5. Measurement: Distance, circumference, area, fetal weight, fetal heart rate6. ... +B modes Resolution Lateral:≤2mm, axial≤1mm Body marks: 15 Measurement: Distance, circumference ,area, heart rate, EDD Comment : date ... Multi-freq Rectal Linear Probe human portable ultrasound scanner YSB0119