reference point

Tokyo

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...
Saitama

Walking along the Nikko Kaido Highway | Discover Cogon Grass Ring! | Senju - Koshigaya

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

Walking along the Sumida River | Discover the Iwafuchi Reference Point! | Iwabuchi Water Gate - Toshima Bridge

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

I found eight first-order benchmarks, including the Japanese datum of leveling, on my walk from Tokyo to the National Diet Building!

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

Found the Reiganjima Water Level Observatory!

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

Walking on the Sagamino Baseline | Discovering a high-voltage power line pointing to magnetic north!

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

Discover the Japanese origin of longitude and latitude!

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

Found an electronic reference point at the Museum of Map and Survey Science!

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

Walking along the Koshu Kaido | Discover Sasago Pass! | Kuronoda - Komakai

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

Walking along Nakasendo | Discover the Kigou Benchmark! | Nihonbashi

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