This paper gives a brief description of various kinds of facilities, reconnaissance and surveying, and design of transit marks of a swinging ground for magnetic compassadjustment.
本文对磁罗经校正场的设备种类、勘察测量和标志设计等作了扼要的阐述。
2
Steering by automatic pilot and by magnetic compass in stead of automatic pilot measure the exactness of magnetic compass by qualified calibrator and provide compassadjustment card.