光学平面自准法(自准测微平行光管、平直仪、准线工具、工程经纬仪等)广泛应用于计量测试、机床和仪器制造、飞机船舰和大型机械设备的安装,甚至建筑行业也用自准直法确定构件的位置或建立方向基准。使用这类仪器时,找自准直象(将平面反射镜大致放到与自准光管出射光轴垂直 Optical Plane Self-Alignment (Self-Aligning Micropumps, Straighteners, Guideline Tools, Project Theodolites, etc.) are widely used in metrology testing, machine tool and equipment manufacturing, aircraft ship and large machinery and equipment installation, and even the construction industry A self-collimation method is also used to determine the position of a component or to establish a directional reference. When using this type of instrument, look for self-alignment (place the plane mirror approximately perpendicular to the exit optical axis of the self-collimator