翻訳と辞書 Words near each other ・ Gyroscope discography ・ Gyroscopic autopilot ・ Gyroscopic control ・ Gyroscopic exercise tool ・ Gyrospilara ・ Gyrostarr ・ Gyrostemon ・ Gyrostemonaceae ・ Gyrosteus ・ Gyrostigma ・ Gyrostigma rhinocerontis ・ Gyrotaenia ・ Gyrotaenia microcarpa ・ Gyrotaenia spicata ・ GyroTec DF02 ・ Gyrotheodolite ・ Gyrotoma ・ Gyrotonic ・ Gyrotrema ・ Gyrotrisauropus ・ Gyrotron ・ Gyrovagues ・ Gyrovector space ・ Gyrovirus ・ Gyrowheel Monument ・ Gyroxus ・ Gyrpanetes ・ Gyrpanetes cacapira ・ Gyrpanetes oriba ・ Gyrpanetes pukuaba Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Gyrotheodolite ： ウィキペディア英語版 Gyrotheodolite A gyro-theodolite is a surveying instrument composed of a gyroscope mounted to a theodolite. It is used to determine the orientation of true north. It is the main instrument for orientation in mine surveying〔 and in tunnel engineering, where astronomical star sights are not visible. ==History== In 1852, the French physicist Léon Foucault discovered that a gyro with two degrees of freedom points north. This principle was adapted by Max Schuler in 1921 to build the first surveying gyro. In 1949, the gyro-theodolite - at that time called a "meridian pointer" or "meridian indicator" - was first used by the Clausthal Mining Academy underground. Several years later it was improved with the addition of autocollimation telescopes. In 1960, the Fennel Kassel company produced the first of the KT1 series of gyro-theodolites. Fennel Kassel and others later produced gyro attachments that can be mounted on normal theodolites. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gyrotheodolite」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.