球径计

例句：

1. 1. The ball circumference is measured by a ball diameter gauge.
   球的周长是通过球径仪测量的。
2. 2. The engineer used the ball diameter gauge to check the accuracy of the measurement.
   工程师使用球径仪来检查测量的准确性。
3. 3. The ball diameter gauge was used to measure the size of the basketball.
   球径仪被用来测量篮球的大小。