子午线数字中继器通过一个红色LED条线图测量磁场或真是指向，误差仅为1/10度。
The Meridian Digital Repeater indicates magnetic or true heading to 1/10th of a degree and rate of turn via a red LED bar graph.
由悬挂式二自由度陀螺罗盘仪和经纬仪组合而成的陀螺经纬仪，是工程测量领域中用以确定子午线方位的主要仪器。
The gyro-theodolite , which is composed of a suspended two-degree-of-freedom gyrocompass and a theodolite, is the main instrument in the engineering measurement for meridian determination.
近代大地测量中，是利用恒星来测定地球某两地间子午线弧长的。
Modern geodesy, is used the stars to determine the earth a between meridian arc length.
在测量中已发现纬度越高的地点，子午线每一度的直线距离越短，首次用测量方法证明地球为扁圆形。
The earth was first proved to be an oblate sphere by survey. It was found that the higher the latitude of a place was, the shorter the straight line distance between every degree of meridian was.
在测量中已发现纬度越高的地点，子午线每一度的直线距离越短，首次用测量方法证明地球为扁圆形。
The earth was first proved to be an oblate sphere by survey. It was found that the higher the latitude of a place was, the shorter the straight line distance between every degree of meridian was.
应用推荐