Method of Drawing and Calculating Diameter of Test Gauge for Measuring Hole Distance by CAD;

检验两孔孔距精度的检具设计，常采用试插检棒的方法。

youdao

Measuring valve spool with holes and gaps, valve hole diameter is 50?

测量阀孔和阀芯的配合间隙，阀孔直径为50 ？

youdao

Measuring dimension of shaft coupling bolts and reamer hole.

轴系连接螺栓和钻孔尺寸测量。

youdao

Dr. Chaim Lotem said the hole, measuring 1 to 2 millimeters, is a minor birth defect found in 15 percent to 25 percent of people.

CNN: Sharon heart operation set for Thursday

On Thursday I reported from the CEH on the latest findings about how much water has soaked into the ground - and saw a bore-hole used for measuring water levels actually spouting out water because the ground was so saturated.

BBC: Predicting the next big flood

Apparently the string of logging tools, each one measuring something different, needs some room to take their readings so the "rat hole" has to extend below the measured area.

FORBES: Magazine Article