... scanner YSB0119 1,portable ultrasonic scanner 2,human ultrasound scanner ... step multi-frequency 5. Measurement: Distance, circumference, area, fetal weight, fetal heart rate6. OB measurement: BPD, GS, CRL, FL, AD ... , axial≤1mm Body marks: 15 Measurement: Distance, circumference ,area, heart rate, EDD Comment : date , name , sex, age , ... -freq Rectal Linear Probe human portable ultrasound scanner YSB0119