Glass bottle tooth root outer diameter detection device

The utility model relates to the technical field of glass bottle detection, and provides a glass bottle tooth root outer diameter detection device aiming at the problems that the conventional detection device needs to adopt equipment such as a PCL sensor, a high-speed camera and the like, is poor in economical efficiency and is not easy to popularize, and the glass bottle tooth root outer diameter detection device comprises a box body which is internally provided with a measuring assembly and a placing assembly, the placing assembly can be used for placing and limiting a tested bottle; a lantern ring in the measuring assembly is connected with the inner side wall of the box body in a sliding manner, and the lantern ring can be arranged at the opening of a measured bottle in a sleeving manner; one end of a telescopic rod in the measuring assembly is detachably connected with the top in the box body, the end, away from the top of the box body, of the telescopic rod can extend into a lantern ring, and the end, c