指南针用于确定地理方向的设备，通常包括一个或多个水平安装或悬挂的磁针，可在枢轴上自由活动直到与地球磁场在一条线上 A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth.
架状物，吊架一种用于支撑或悬挂的类似的结构物 A similar structure used for supporting or suspending.
