It is an application that displays about 100,000 triangulation points (electronic reference points) installed nationwide on a map.
You can search Google for each triangulation station, display or copy latitude / longitude information, and send it to Google Map.
In addition, the triangulation points you visit and the triangulation points you care about can be registered as favorites along with the date and memo, and these can also be saved in KML format. Since it also has a data backup function, it can be taken over even if it is reinstalled due to a terminal change or the like.
Then upload the image of the triangulation station you took and share it with everyone!

Since the cache function is enabled for the Geographical Survey Institute map, if you display the necessary map in advance, you can display the map even in places where radio waves do not reach, and you can see your whereabouts.
For outings such as mountain climbing, hiking, walking, and cycling.

* In creating this map, we used the basic map information issued by the Geospatial Information Authority of Japan with the approval of the director of the Geographical Survey Institute. (Approval number Hei 28 ambassador, No. 123)
* The "Geographical Survey Tile" is used to display the Geospatial Information Authority of Japan map.
http://maps.gsi.go.jp/development/ichiran.html