Circular inspection well aperture measuring device

The utility model discloses a circular inspection well aperture measuring device. The circular inspection well aperture measuring device comprises a cross-shaped fixing rod, four fixing joints, four positioning rods, a first measuring rod and a second measuring rod. According to the circular inspection well aperture measuring device provided by the utility model, the rapid disassembly of the device after measurement is realized through the rotary connection form of the positioning rod and the spiral connection form of the first measuring rod, so that the occupied space is effectively reduced. 本实用新型公开了一种圆型检查井孔径测量装置，包括：十字形固定杆、四根固定节、四根定位杆、第一测量杆以及第二测量杆。本实用新型提供的圆型检查井孔径测量装置中，通过定位杆的转动连接形式及第一测量杆的螺旋连接形式以实现测量后装置的快速拆卸，以有效减少占用空间。