T4经纬仪是野外精密测角仪器,其望远镜放大率高,象质清晰,测角系统具有较高的精度与分辨率,安平精度高。因此,不仅测绘部门广为应用,而且还用于机械工业中的角度与空间几何位置测量。但是,由于该仪器没有准直装置,不能与反射镜准直,使其在机械工业中的应用受到很大限制。T4经纬仪加装自制的准直目镜后,就可以挖掘设 T4 Theodolite is a precision measuring instrument in the field. Its telescope has high magnification, clear image quality, high accuracy and resolution of the measuring system, and high precision. Therefore, not only the surveying and mapping department is widely used, but also used in the machinery industry, the angle and the spatial geometric position measurement. However, since the instrument is not collimated, it can not be collimated with a reflector and its use in the machinery industry is severely limited. T4 theodolite installation of self-made collimating eyepiece, you can dig set