A small surveying and angle measuring instrument that compactly combines a magnet, bubble level, mirror, sight, and plumb line, and was created by DW Brunton (1849-1927), a surveyor for the United States Geological Survey. The Brunton Compass is a product name, and its common name is the pocket transit level. It can also be attached to a tripod, and is used for route mapping and surveying in geological surveys inside mines. As it also has the function of a clinometer, it can be used to directly measure not only strata, but also joint surfaces, fault surfaces, and various line structures found in rocks in general, in the field. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
磁石,気泡水準器,鏡,照尺,錘をコンパクトに組み合わせた小型の測量・測角器具で,アメリカの地質調査所の測量技師ブラントンD.W.Brunton(1849‐1927)によって作られた。ブラントンコンパスは商品名で,一般名はポケットトランシットレベルともいう。三脚にとりつけることも可能で,ルートマッピングや坑内の地質調査の際の測量に使用する。クリノメーターの機能をそなえているので,地層面のみならず,岩石一般にみられる節理面,断層面,各種の線構造を野外で直接的に計測することができる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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