Silicone fiberglass casings are to be tested with a specified inspection tool: a needle gauge.

Test method in fiberglass casing:

     1. Cut one end of the test piece (glass fiber sleeve) to be flat;

     2. Take the device under test (glass fiber sleeving) in the left hand, take the needle gauge in the right hand, align it vertically in the circular hole of the part, and read it according to the value marked on the surface of the needle gauge. The estimated value retains two decimal places;

     3. After the needle gauge is used up, put it back in place and keep it in a safe place.

玻璃纤维套管规格的选择以及测试方法

硅树脂玻璃纤维套管检测内径需使用规定的检测工具：针规。

玻璃纤维套管内经测试方法：

   1. 将被测件（玻璃纤维套管）检测一端裁剪平整；

   2. 左手拿被测件（玻璃纤维套管）,右手拿针规,对准零件圆孔位垂直轻轻扦入，按照针规表面标有的数值读出，预估值保留两位小数；

   3. 针规用完后应将其放回原处,妥善保管。