reticle

The traditional method to use Autocollimator is to interpret the pattern on the reticle through the eyepiece of the instrument. A long time operation is likely to cause eyestrain, increase the alignment error and reading error, and reduce efficiency.

传统的光学自准直比较测角仪都是依靠人眼从仪器的目镜中观察分划板，长时间操作容易造成测量人员眼睛疲劳，增大瞄准读数误差，降低工作效率。

This paper presents the basic construction and movement rules of the coordinator gyrorotor with reticle of Archimedes spiral reticule pattern, Also, it explains the principles and methods of dynamical balance to damp the vibration and forced nutation.

阐述了具有阿基米德螺旋线图案的位标器的基本原理及其运动规律，并说明这种陀螺转子的振动与绕动的平衡原理与方法。

The main purpose of analysis of networks in GIS is to carry through geography analysis and shape up of geography network and city basic establishment network ( as traffic network 、 all reticle 、 electri line 、 telephone line 、 flow pipe and watershoot etc.)

地理信息系统中网络分析功能的主要目的是对地理网络、城市基础设施网络（如交通网络、各种网线、电力线、电话线、供排水管线等）进行地理分析和模型化。