A wheel with a circle of pins at right angles to its face, used as a tripping device.
A wheel with a circle of pins at right angles to its face, used as a tripping device.
针轮，销轮一种轮子，其表面插着一圈针，用来做陷阱设备
A wheel with a circle of pins at right angles to its face, used as a tripping device.
针轮，销轮一种轮子，其表面插着一圈针，用来做陷阱设备