セオドライト トランシット トータルステーション
A theodolite is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. It is used for land surveying, building and infrastructure construction, and specialized applications such as meteorology and rocket launching.

h4. External links

* "Wikipedia: Theodolite":[https://en.wikipedia.org/wiki/Theodolite]
theodolite