端规 meaning in Chinese

end gauage

Go gauging members over 40 mm up to 120 mm nominal diameter
标称直径40至120mm的过端规体
Not go cylindrical gauging members over 40 mm up to 120 mm nominal diameter
标称直径40至120mm圆柱形不过端规体
Not go gauging members with spherical ends over 40 mm up to 500 mm nominal diameter
标称直径40至500mm带球形头的不过端规体
Go gauging members over 40 mm up to 250 mm nominal diameter for use in precision engineering
精密技术用标称直径40至250mm的过端规体