基準点 | 東京近郊の散歩

Walking along the Sumida River｜Discovering Minamitakahashi Bridge, the recycled Ryogoku Bridge! | Mannen Bridge - Tsukuda Bridge

The Minami-Takahashi Bridge, located near the Reiganjima Water Level Observatory, is a bridge made by recycling the less...

2018.06.17

東京都

There are almost no articles on Saitama Prefecture in this blog. So, this week, I will attack Saitama Prefecture.The cou...

2018.06.09

埼玉県

The elevation of Japan is based on the mean sea level of Tokyo Bay, T.P. (Tokyo Peil). The water mark for measuring the ...

2018.03.04

東京都

The elevation in Japan is the height of Tokyo Bay from mean sea level.In May 1894, a mark was placed at 24.500 meters ab...

2017.12.17

東京都

I was interested in the reference point for the elevation of Japan, so I went to see the Reiganjima Water Level Observat...

2017.11.12

東京都

To make a map, a baseline is determined and surveyed. The Sagamino baseline is the baseline connecting the first two ref...

2017.07.01

神奈川県

I went to the Japanese origin of longitude and latitude, which is used as a standard when making maps.Nitenmon Gate of t...

2015.05.17

東京都

Maps are essential for walking in unfamiliar places. In Tsukuba, there is a museum called "The Museum of Map and Surveyi...

2015.04.30

茨城県

Today is the day of crossing Sasago Pass. I'm a little nervous to see if I can make it over safely.Kuronoda-jukuAs soon ...

2012.05.21

山梨県

The term "benchmark" is sometimes used to compare the performance of PCs. But the term "benchmark" originally refers to ...

2012.01.08

東京都