The industrial endoscope must be checked and calibrated before use, so as to improve the accuracy of future inspection. If they are used rashly, it may bring unpredictable losses. Talking about the inspection before the calibration of endoscope.

1.在足够的照明下观察内窥镜的外表面。电镀零件的表面应光滑，无刮擦。表面应均匀且颜色一致。不应有明显的划痕，烧伤和明显的裂缝。喷塑部件的表面应平整光滑，颜色应均匀，底部不应有起泡，剥离和开裂。

1. Observe the external surface of the endoscope under sufficient illumination. The surface of electroplated parts shall be smooth without scratch. The surface shall be uniform and uniform in color. There should be no obvious scratches, burns and obvious cracks. The surface of spray parts shall be smooth and even in color, and the bottom shall be free from blistering, peeling and cracking.

2.照明点处于正常工作距离。将白板放在被测端，用浸入的透射光或内窥镜自身的光源照亮。从目镜或肉眼观察。照明点应填充视野，而没有明显的明暗区域。

2. The lighting point is in the normal working distance. The white board is placed on the end to be measured and illuminated by the immersed transmission light or the light source of the endoscope itself. Observe from eyepiece or naked eye. Lighting points should fill the field of vision without obvious light and dark areas.
                

3.在正常工作距离下，视场灯条（适用于光纤内窥镜）的方向标记，将白板放在被测端，用浸入的透射光或内窥镜自身的光源照亮，并从目镜，视场亮条箭头指示，方向标记的方向应在上方。

3. Under the normal working distance, the direction mark of the field of view light bar (applicable to the optical fiber endoscope) shall be placed on the measured end, illuminated by the immersed transmitted light or the light source of the endoscope itself, and indicated by the eyepiece and the arrow of the field of view light bar. The direction of the direction mark shall be above.

4.在正常工作距离，脱胶或发霉的地方，将白板放在被测端上，将光源浸入透射光或内窥镜中进行照明，并从目镜或监视器上用裸眼观察，无明显脱胶或发霉现象。

4. Place the white board on the tested end at the normal working distance, where degumming or mildew occurs, immerse the light source in the transmitted light or endoscope for illumination, and observe with naked eyes from the eyepiece or monitor, without obvious degumming or mildew.

在检查这些设备之前必须完成！正确的使用好内窥镜是我们检测工作效率的保证！

This must be done before checking these devices! Correct use of endoscope is the guarantee of our detection efficiency!