reference point

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

Tokyo

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

2018.06.09

Saitama

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

Tokyo

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 ...

2017.12.17

Tokyo

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

Tokyo

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

2017.07.01

Kanagawa

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

2015.05.17

Tokyo

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

2015.04.30

Ibaraki

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

2012.05.21

Yamanashi

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

2012.01.08

Tokyo