There is set forth herein a system including a camera device. In order to protect a machine from possibly damaging elements while facilitating air exchange and attenuating machine noise, the present disclosure includes a machine that is, at least, partially surrounded by a machine housing. The control handle is slidably mounted to the exterior surface of the endoscope shaft and is configured to permit grasping of both the shaft and the handle. The straight edge of the body of the horizontal module is used as a starting edge, and the straight edge of the accessory module is used as an ending edge for measuring or drawing an included angle. The classification system can then use the classifier to classify blocks of web pages.