Technical Report of the Kakioka Magnetic Observatory, - Selected Translations - Vol.04 (March 2006)
大和田毅,福井史雄,横山恵美,長谷川浩,源泰拓
Owada, T., Fukui, F., Yokoyama, M., Hasegawa, M. & Minamoto, Y. Investigation on a Magnetic Theodolite with the Functions of Both DI and FT Theodolites Combined