pelvimeter for external measurement

例句：

1. 1.The doctor used a pelvimeter to measure the baby's size.
   医生用一个骨盆测量器来测量宝宝的大小。
2. 2. The nurse measured the patient's height with a pelvimeter.
   护士用一个骨盆测量器测量病人的身高。
3. 3. The pelvimeter showed that the baby was growing well.
   骨盆测量器显示宝宝正在健康成长。